This happened in Seattle. In other words, business as usual.
As if there WOULDN'T be violence. Where do anarchists and communists protest and it DOESN'T become violent?
The media continuously emphasizes how "peaceful" most of the protesters are. Except for "a few bad apples that give the rest a bad name".
Yeah, that seems to be the case I guess. "Peaceful" protesters always seem to carry hammers and pipes.