“Low-key” violence now entails only “several” police officers being injured.
“Albuquerque police said on Twitter late Tuesday that “several” officers were being treated for injuries as a result of being hit by rocks.”
Source: http://www.foxnews.com/politics/2016/05/25/protests-turn-violent-outside-trump-new-mexico-event.html
Getting hit in the head with a rock can cause a very, very serious injury. When the pendulum swings back after this January, I expect the police to fight back under conditions like this and “explain” to these punks that violence is not acceptable. When enough of them have a good “explaining to”...the violence will end.