The protesters were crowding businesses, throwing piss on people, throwing bricks and rocks at people and cars, harassed and threatened bystanders, vandalized houses, attacked a college campus, and went as far as surrounding a minority church. This is before even running down a crowd of even standard shoppers with a car in a busy crosswalk.
It wasn't a case of just having a symbol that people didn't like. They came into Cville like a fucking insurgency.