Because if you successfully defend yourself from a murderer you have a rightful plea to self defense.
If you successfully defend yourself from a cop trying to murder you. You will be lucky with life without the possibility of parole. There is an implicit cannot flee cannot fight in an interaction with a law enforcement officer. So pretty much your natural fight or flight is neutralized and that is a hell of a situation to be in.
Because if you successfully defend yourself from a murderer you have a rightful plea to self defense.
If you successfully defend yourself from a cop trying to murder you. You will be lucky with life without the possibility of parole. There is an implicit cannot flee cannot fight in an interaction with a law enforcement officer. So pretty much your natural fight or flight is neutralized and that is a hell of a situation to be in.