The right to free assembly is part of US constitution, though I don't really see this just an American issue. About the rest of the stuff you say, OK, whatever, not relevant to me
I mean, the unrest is not really about the murder of the person by the police. The unrest is about the dying democracy and dying economy.
OK, fair enough. Atm though I am more interested in the dangers to the government system. A US military controlled by an evil entity the way China is, is a very scary thought.