But then, there was the 1966 Univ. of Texas Clock Tower sniper incident which killed 13 people. So, not unprecedented.
A cop was even killed by Mumia in 1981.
Well mainstream Dems and the press are pushing for violence, and people are acting based on what is being pushed. That is the difference.
In Baltimore, the most recent looting and burning should have resulted in sending in the National Guard with armored personnel carriers and shooting the rioters.
The Feds should declare Antifa a terrorist group, and the next time Antifa is violently assaulting people while Berkeley police (or others) do nothing, they should go in and arrest them all as terrorists, and break bones or kill a few if they resist arrest too much.