I believe the official story. Cop saw a black guy walking after dark and stopped to investigate because he considers being black after dark to be suspicious. Conveniently it was determined that the black man had indeed committed a crime after the fact.
During the course of his harassment stop the cop defied what should be department policy, and is recognized as good police procedure by almost all cops, by approaching a suspect who was on foot while still in his vehicle. This presented the cop's own car door as a weapon of opportunity that made it possible for what should have been a routine stop to escalate into a life or death confrontation.
Since it was a black person that wound up dead the FPD sees no problem with this, as harassing, beating, and now killing of blacks is in keeping with the long standing general philosophy of their department. Also in keeping with department policy immediate actions to sanitize the reporting took precedence over any investigation. This effort was backed by the local DA's office, which has a record indicating a similar policy on police violence.
Did I miss anything?