I wanted to learn more about these protests and the violence/riots so I searched Trump protests. The links presented spoke of non violent protests. The first link I found that spoke of violent protests was from Vanity Fair. Ironically (use intended), the link was to an article describing how Trump supporters were violent to peaceful demonstrators.
http://www.vanityfair.com/news/2016/...rally-violence
I will continue to do some research as my google search may not have been ideal terms.