I'm going to sit there and claim that "the African-American community"* has inculcated the belief in the various police departments that they are more violent and dangerous and self-defence is a bigger issue, yes absolutely. The Police are reacting to consistently the most violent criminal offenders in the nation, not just rioters.

* I hate that phrase, its not a community, it's criminals who are African-American not the entire community that are the issue - just as its the bad eggs within the Police that are the issue too.