Actually, since crime scene investigators (CSIs) work all homicides, justifiable or not, I'd support the use of the term "crime scene." Apart from that, the testimony of Officer Darren Wilson was that Michael Brown was guilty of initiating an assault on Darren Wilson at that location.  At the time that data are recorded from the scene of any homicide, the possibility of a crime having been committed is assumed by first responders and crime scene investigators.  Both Darren Wilson and Michael Brown were regarded by press accounts as criminal suspects when that crime was investigated.