Although I am a white Brit I have known plenty of black people and some of them suffered harassment by police. A racist police force is bad for society, but some of those attracted to that job will hold such views.
I am showing my ignorance of guns in general. I saw someone was arrested for use of a deadly weapon when they threw a tear gas grenade back at the police. How cynical is that?
I think peaceful protest is a powerful weapon. It carries risks as MLK and Ghandi found out.