The vast majority, if not all of these high-profile incidences start with criminal acts. When there is a perceived injustice related to wealth, how many times have we heard Obozo say "everybody needs to play by the rules". Well, where is he now, applying the same standards. If inner-city blacks would simply abide by the law, they wouldn't have a cop fetish.
In every one of the recent high profile cases of blacks being killed by the police, the perp resisted arrest and/or tried to assault the cop. And in the case of the black man shot in the back by the policeman, he resisted arrest, may have assaulted the cop, and then ran.
Cops know what libs don't know...it's always dangerous to stop and question and/or arrest a black male. Or a black female.