In what timeline are you talking about? Women's Suffrage definitely had protests turn violent. Here[1] is source about documenting this violence, and I went through the trouble of finding a source published 2 years ago in order to counter any narrative that it's "convenient" for today's issues. History has a way of whitewashing and romanticizing what were difficult fights for rights.
Large protests turn violent, and I'm not surprised that, with record unemployment as well, that looting is being amplified as well.
Besides, in any case, it's long established that peaceful protests don't even work. A man can't even kneel during a sports game without his protest being diminished.
[1] https://www.bl.uk/votes-for-women/articles/suffragettes-viol...