eyewitnesses with first hand knowledge on what happened, that DNA is the property of the state and defendant's rights to present it lay with the presiding judge who can and often does refuse it's admission. You should also know that in any criminal case with a 'victim' that 'victim' will more than likely have been handsomely paid for their testimony (this occurs within days of reporting to police and after funds are received if an attempt to recant or alter your original claim you will be informed that you can be prosecuted for fraud) Also someone who is not in the country legally can attain legal US citizenship by claiming to be a 'victim' of a crime as well. (Pretty enticing for even the most ethical of people) You should also know that law enforcement is specifically trained to 'avoid' finding any evidence which may dispute the reported crime. Unlike on TV they often do not go back to the scene, interview witnesses etc.if there is any chance that it may result in a conflicting account of the events reported. Ironically, I presently hold in my hands a jury summons for 2 weeks from now. I can't even look at a courthouse with out feeling as if I am having a heart attack and reliving the horror of seeing my boy taken away and not knowing if he will ever be home again and in what condition he'll be if he does make it out (death is a very common