Yeah that's certainly true. They should have come forward and denounced the violence, if they had any sense. I don't believe it's not the protesters doing the rioting, but it's just a subset of the protesters. Just like probably only 1% of the cops is bad, but that's still a lot of cops so a lot of video footage, if only 1% of the protesters is bad you've got a shit ton of rioters who are going to destroy entire cities.