Title: Missouri v. Gates
Citation: N/A
Docket Number: SC98847
State: Missouri
Issuer: Missouri Supreme Court
Date: December 21, 2021

SUPREME COURT OF MISSOURI 
en banc 
STATE OF MISSOURI, 
     ) 
     ) 
Respondent, 
     ) 
     ) 
v. 
     ) 
No. SC98847 
     ) 
TYLER J. GATES, 
) 
     ) 
Appellant. 
     ) 
APPEAL FROM THE CIRCUIT COURT OF JACKSON COUNTY 
The Honorable Jack R. Grate, Judge 
Tyler J. Gates appeals his judgment of conviction for second-degree felony murder 
and armed criminal action stemming from an alleged robbery during which Gates shot 
and killed Mathew Haylock.  Gates claims he did not rob Haylock but, instead, shot him 
in self-defense after Haylock attempted to rob Gates.  The circuit court denied Gates’s 
multiple attempts to present evidence he acted in self-defense.  The circuit court’s 
evidentiary rulings prevented Gates from offering his own version of events that he did 
not actually rob Haylock and, as a result, infringed on his constitutional right to present a 
complete defense as guaranteed by the Sixth and Fourteenth Amendments.  The judgment 
is reversed, and the case is remanded. 
Opinion issued December 21, 2021
2 
 
Background 
 
Gates drove Luis Ramirez to pick up Haylock so the three could go to the mall.  
According to Ramirez, who was the State’s principal witness, Gates asked to see 
Haylock’s handgun as they were driving to the mall and refused to return the gun once 
they arrived.  Ramirez testified that, when Haylock reached for his gun, a struggle 
between Haylock and Gates ensued, and Gates ultimately shot Haylock.  Gates’s own 
version of the events starkly differed.  He claimed that, once they arrived at the mall, 
Haylock tried to rob him by pointing his gun at Gates’s face and demanding cash.  
According to Gates, despite numerous attempts to push Haylock’s gun away, Haylock 
kept pointing his gun at Gates’s head.  Gates was prepared to testify he ultimately felt he 
had no choice but to shoot Haylock in self-defense.  
 
Gates was indicted on one count of felony murder based on the underlying felony 
of first-degree robbery as well as one count of armed criminal action.  The State moved 
in limine to bar Gates from injecting “any issue of self-defense throughout voir dire, 
opening and closing arguments, and any direct or cross examinations[,]” relying on 
section 563.031.1(3)1 and State v. Oates, 540 S.W.3d 858 (Mo. banc 2018).  Gates 
conceded he would not seek a self-defense instruction on the felony murder charge but 
insisted that “whether or not a robbery was occurring is a fact issue for the jury and we 
should be able to argue self-defense throughout the trial.”  Gates further argued that 
barring him from testifying about his own version of events that he did not rob Haylock 
                                              
1 All statutory references are to RSMo 2016, unless otherwise specified. 
3 
 
would deny him his constitutional right to present a complete defense.  The circuit court 
ultimately sustained the State’s motion and prohibited Gates from presenting any 
evidence related to self-defense.  
 
Gates asked the circuit court to reconsider its ruling prior to voir dire, arguing it 
precluded him from rebutting the State’s charge that he was committing a felony at the 
time he shot Haylock.  The court maintained its prior ruling.  Before opening statements, 
Gates again requested that the court reconsider its ruling.  He argued Oates narrowly held 
that a self-defense instruction cannot be given with a felony murder count, not that the 
defense is barred from presenting evidence of self-defense at all.  Gates also asserted he 
had a right to testify on his own behalf and to testify about his own version of events.  In 
response, the court stated: “He does not have the right to undermine my ruling, that will 
happen on appeal if it happens at all.  It won’t be happening in opening statement or out 
of his mouth.  He may not mention anything that touches on self-defense, that’s the ruling 
of the court relentlessly.”  The court further declared: “Anything commonsensically that 
has something to do with self-defense he can’t do.  It’s barred.  That’s what I think that 
[Oates] says[.]”  
 
Before testifying, Gates made an offer of proof in which he provided the full 
testimony he planned to give if permitted to do so.  The circuit court rejected Gates’s 
offer of proof and ruled that, if Gates testified before the jury, “he may not mention self-
defense or anything touching upon self-defense or his fear regarding his need to protect 
himself or something.”  Throughout the proceedings, Gates raised the issue of presenting 
4 
 
his own version of events on eight separate occasions.  Each time Gates raised this issue, 
the circuit court denied him the right to provide such evidence. 
 
The jury ultimately found Gates guilty of both counts, and the circuit court 
sentenced him to 20 years for felony murder and seven years for armed criminal action, 
with the terms to be served concurrently.  Gates appeals the circuit court’s judgment of 
conviction, challenging the circuit court’s evidentiary rulings prohibiting his proffered 
evidence.2   
Standard of Review 
 
Evidentiary rulings are typically reviewed for abuse of discretion.  State v. March, 
216 S.W.3d 663, 664 (Mo. banc 2007).  But “[w]hen facts are not contested and the issue 
is one of law, [this Court’s] review is de novo, and no deference is given to the trial 
court’s determination.”  Stiers v. Dir. of Revenue, 477 S.W.3d 611, 614 (Mo. banc 2016).  
The question of whether a criminal defendant’s constitutional rights were violated is a 
question of law reviewed de novo.  March, 216 S.W.3d at 664-65. 
Analysis 
Gates argues the circuit court’s evidentiary rulings prohibiting him from 
presenting any evidence related to self-defense infringed on his Sixth and Fourteenth 
Amendment rights to present a complete defense. 3  He asserts that, as a result of these 
                                              
2 After an opinion by the court of appeals, this Court granted transfer.  Mo. Const. art. V, sec. 10. 
3 Gates also challenges the circuit court’s failure to provide a self-defense instruction to the jury.  
Because this Court is reversing the circuit court’s judgment on other grounds, that issue need not 
be addressed. 
5 
 
rulings, he was unable to provide his own version of events, which prevented him from 
meaningfully contesting whether he actually committed a robbery. 4 
The circuit court repeatedly denied Gates the opportunity to present his full 
account of the events in question.  During opening statements, the defense stated, “Then 
they stop in the parking lot and . . . Gates turns around and he’s looking at a gun.”  At 
that point, the State objected, and the following exchange took place at the bench:  
State: Your Honor, I think defense counsel is getting dangerously close to 
violating your rule. 
 
Circuit Court: I am too. 
 
Gates’s Counsel: Your Honor, I didn’t say he was fearful of his life.  I’m just 
going to give his version of his story.  I understand that was your ruling, but 
I can tell Mr. Tyler Gates’ version of his story. . . . 
 
Circuit Court: I don’t think you can say anything more about it.  I think 
you’ve already overstepped. 
 
                                              
4 The State contends Gates failed to preserve the argument that his proffered evidence was 
necessary to contest the robbery charge against him because he failed to make that specific 
argument at trial.  The State claims Gates instead merely argued this evidence was necessary to 
inject the issue of self-defense into the case and that prohibiting his proffered testimony violated 
his constitutional right to testify.  But from the initial argument on the State’s motion in limine to 
Gates’s motion for a new trial, Gates argued his version of events was relevant to address 
whether or not a robbery had occurred.  For example, during Gates’s testimony, his counsel 
specifically stated, “I think this goes directly to one of the elements that the State was trying to 
prove.  They are trying to prove that Mr. Tyler Gates was attempting to rob someone.  He said 
while he was on the stand he was not attempting to rob anyone.”  While Gates’s counsel also 
referenced Gates’s right to testify and used the phrase “self-defense” to describe the nature of the 
evidence Gates wished to present, Gates made clear on multiple occasions that his proffered 
evidence was necessary to rebut the State’s claim that a robbery had occurred.  The circuit court 
clearly understood what Gates was arguing, as the court complained it had “ruled 33 times” on 
the issue and it was “the 13th time” Gates’s counsel had requested clarification.  Finding Gates 
failed to preserve this argument would require this Court to ignore the full context of the record 
and apply the law of preservation in an unreasonably technical manner.  Gates’s numerous 
attempts to secure his right to present his own account of events were sufficient to preserve his 
argument that such evidence was necessary to contest his robbery charge. 
6 
 
Gates’s Counsel: Okay.  So are you ruling I cannot tell Mr. Gates’ version of 
the events that happened within the vehicle? 
 
Circuit Court: You can’t talk about self-defense, what I’ve ruled 33 times. 
 
Gates’s Counsel: I understand.  Are you ruling I can’t talk about Tyler Gates? 
 
Circuit Court: No.  No, you can’t talk about self-defense. 
 
Gates’s Counsel: Okay.  I’m not going to mention self-defense.  I’m not 
going to mention fear for his life.  I’m not going to mention he had to do, 
what he had to do. 
 
Circuit Court: He’s been looking at a gun.  It adds up to the same thing to 
me.  There’s no point of other words than self-defense.  The fact that 
somebody has a gun aimed on him would put him in fear, you’re heading 
towards self-defense.  There’s no reason for that. 
 
Gates’s Counsel: I understand your ruling.  But I just want to make clear that 
I’m not allowed to tell Tyler Gates’ version of the events in the vehicle. 
 
Circuit Court: That’s not what I said.  That’s the 13th time you’ve asked me 
that.  That’s not what I said. 
 
Gates’s Counsel: I guess, I’m not clear on your ruling, Your Honor. 
 
Circuit Court: You may not talk about anything about self-defense or 
something about fear, or something about guns pointing at people.  You can’t 
talk . . . about that. 
 
Gates’s Counsel: I believe the State has already opened the door about gun[s] 
pointing at people. 
 
Circuit Court: You can’t because you’re heading towards self-defense. 
 
Gates’s Counsel: Just so I’m clear, Judge.  So the fact that we can’t go into 
the facts, not that Mr. Gates will testify that Mr. Haylock pulled out a gun 
first, and Mr. Gates then grabbed the gun and then Mr. Gates shot. 
 
Circuit Court: None of that will come in. 
 
Gates’s Counsel: None of that.  We cannot talk about any of that. 
 
7 
 
Circuit Court: The only purpose of any of that is to demonstrate self-defense.  
You’re evading my ruling. 
 
The defense was effectively forced to resume opening statements by skipping ahead to 
the point in time when Haylock had already been shot without fully explaining Gates’s 
account of the events leading up to the shooting. 
Later during Gates’s testimony, he stated he began to feel nervous on the way to 
the mall.  The State objected, and the circuit court instructed Gates’s counsel not to invite 
Gates to say he was afraid.  Gates resumed his testimony and stated that, after he pulled 
into the mall parking lot, he turned around to see a gun in his face.  The State objected 
again, and the following exchange occurred at the bench: 
State: He said he looked back and he saw a gun, that goes directly to what 
you told him not to say. 
 
Gates’s Counsel: I believe you said I can’t say that he was fearful. 
 
Circuit Court: No, you can’t do anything [i]n the neighborhood of self-
defense, including what she just said she thought you were going to do. 
 
Gates’s Counsel: Your Honor, can I ask if he thought Matthew Haylock was 
going to rob him? 
 
Circuit Court: I have no reason to think that.  That goes towards self-defense 
again.  I don’t know how to say it any clearer.  No matter how many times 
you all try, I’m not going to let him defend himself with self-defense.  You’ve 
made your record repeatedly. 
 
Gates’s Counsel: So, then, I would ask, Your Honor, because he’s already 
said these events.  I think this goes directly to one of the elements that the 
State was trying to prove.  They are trying to prove that Mr. Tyler Gates was 
attempting to rob someone.  He said while he was on the stand that he was 
not attempting to rob anyone. 
 
Circuit Court: He can say that.  You can ask if he was attempting to rob 
somebody.  You can ask that. 
8 
 
 
Gates’s counsel asked Gates if he was attempting to rob anyone during the events in 
question, to which he answered, “No[.]”  Gates’s counsel then informed the circuit court 
that he planned to ask Gates who shot Haylock and why.  The circuit court told Gates’s 
counsel he could ask Gates if he shot Haylock but could not ask him why.  The court 
explained: 
You may not ask any of these questions touching on: I did this for a good 
reason, or I did this because I was scared, or I did this because of self-defense.  
I was in fear of getting robbed.  You can’t do any of that.  If I’m wrong, I’m 
wrong, we’ll find out in four months. 
 
Accordingly, Gates testified that he shot Haylock without explaining why.   
During closing arguments, the State told the jury, “What matters is Tyler Gates’ 
actions after they pulled into that parking lot . . . .”  But the circuit court repeatedly 
denied Gates the opportunity to present his own account of that timeframe to counter the 
version of events presented by the State. 
 
The Supreme Court of the United States has emphasized the fundamental 
importance of a criminal defendant’s right to present a complete defense.  As the 
Supreme Court has explained: 
Whether rooted directly in the Due Process Clause of the Fourteenth 
Amendment, or in the Compulsory Process or Confrontation clauses of the 
Sixth Amendment, the Constitution guarantees criminal defendants “a 
meaningful opportunity to present a complete defense.”  We break no new 
ground in observing that an essential component of procedural fairness is an 
opportunity to be heard.  That opportunity would be an empty one if the State 
were permitted to exclude competent, reliable evidence . . . when such 
evidence is central to the defendant’s claim of innocence.  In the absence of 
any valid state justification, exclusion of this kind of exculpatory evidence 
deprives a defendant of the basic right to have the prosecutor’s case 
encounter and “survive the crucible of meaningful adversarial testing.” 
9 
 
 
Crane v. Kentucky, 476 U.S. 683, 690-91 (1986) (internal citations omitted).  A criminal 
defendant’s right to present a complete defense includes the defendant’s right to testify 
himself.  Rock v. Arkansas, 483 U.S. 44, 52 (1987).  “[A]n accused’s right to present his 
own version of events in his own words” is fundamental to the fairness of a criminal 
proceeding, as “the most important witness for the defense in many criminal cases is the 
defendant himself.”  Id.  Further, the State “may not apply a rule of evidence that permits 
a witness to take the stand, but arbitrarily excludes material portions of his testimony.”  
Id. at 55.   
The circuit court’s rulings violated these fundamental constitutional principles by 
denying Gates the opportunity to refute the charges against him by presenting his 
explanation of what happened.  Because Gates’s felony murder charge was based on the 
underlying felony of first-degree robbery, whether Gates had, in fact, committed first-
degree robbery was the ultimate issue in the case.  According to the verdict director, to 
find Gates had committed first-degree robbery, the jury had to find: 
First, that . . . [Gates] took a gun, which was property in the possession of 
[Haylock], and  
 
Second, that [Gates] did so for the purpose of withholding it from the owner 
permanently, and  
 
Third, that [Gates] in doing so used physical force on or against [Haylock] 
for the purpose of preventing resistance to the taking of the property, and  
 
Fourth, that in the course of taking the property, [Gates] was armed with a 
deadly weapon.  
 
10 
 
(Emphasis added).  As such, the purpose behind Gates’s actions—whether he shot 
Haylock to defend himself or to prevent Haylock from resisting a theft—was critical in 
determining whether Gates was guilty of felony murder.   
 
The State argued in closing that the “purpose” element of first-degree robbery was 
established because the evidence purportedly showed Gates shot Haylock “because he 
was going to keep [Haylock’s] gun.”  Gates, however, was explicitly barred from 
explaining his purpose for shooting Haylock.  His proffered evidence would have directly 
countered the State’s argument because Gates asserted he shot Haylock to defend himself 
from Haylock’s attack, not to take Haylock’s gun.  But the circuit court prevented Gates 
from offering this explanation to the jury. 5   
 
                                              
5 The circuit court concluded that allowing Gates to present any evidence related to self-defense 
would contradict Oates, 540 S.W.3d 858, and render section 563.031.1(3) meaningless.  But 
neither Oates nor section 563.031.1(3) required the circuit court to bar Gates from presenting his 
account of the events entirely.  Oates held self-defense is not a legal defense to felony murder 
because “felony murder is not based on the defendant’s use of force but rather the underlying 
felony[.]”  540 S.W.3d at 860.  “In other words, unless the underlying felony involves the 
defendant’s use of force, felony murder is not prosecuting the defendant’s use of force.”  Id. at 
862 (emphasis added).  Oates specifically clarified that self-defense is an available justification 
when “the criminal act being prosecuted is the defendant’s use of force.”  Id. at 861.  The 
underling felony in Oates was a non-forcible felony.  Id.  Gates’s case differs because the 
underlying felony was robbery, which, as discussed above, is a forcible felony.  Section 
563.031.1(3), however, provides that an individual may not use self-defense as a justification for 
the use of force against another if he or she “was attempting to commit, committing, or escaping 
after the commission of a forcible felony.”  But section 563.031.1(3) does not prohibit the 
admissibility of evidence and, instead, addresses the availability of a legal defense.  The circuit 
court misinterpreted section 563.031.1(3) by ruling the statute prohibited Gates from testifying 
about self-defense.  The statute does not prevent a criminal defendant from arguing he or she 
used physical force for a purpose other than committing the forcible felony for which the 
defendant is charged.  Such a rule would be a clear violation of the defendant’s constitutional 
rights, as a criminal defendant is entitled to “a jury determination that [he] is guilty of every 
element of the crime with which he is charged, beyond a reasonable doubt.”  Apprendi v. New 
Jersey, 530 U.S. 466, 477 (2000) (alteration in original).   
11 
 
Conclusion 
Due to the circuit court’s exclusionary rulings, the jury heard only the State’s 
account of the events that occurred between the time Gates arrived at the mall and the 
moment Haylock was shot.  Consequently, Gates was unable to counter the State’s 
argument that he robbed Haylock and, therefore, was guilty of felony murder.  By 
prohibiting Gates from presenting any evidence about the ultimate issue in his case, the 
circuit court prevented Gates from presenting a complete defense, in violation of his 
Sixth and Fourteenth Amendment rights.  As such, the United States Constitution 
requires that the judgment be reversed and remanded.  See, e.g., Crane, 476 U.S. at 685-
86. 
 
______________________________ 
Mary R. Russell, Judge 
 
 
 
All concur.