There's really not much to fear. While it's true that the violence is coming from the Left and targeting the Right, the laws are not on the side of those who are using violence and property damage to "take the country back."
And, except at the ballot box, it's not legal to take it back anyway.
To expand a bit on DGUtley's comment -- the Right isn't really afraid. Should some sort of civil war actually break out -- the Right is armed to a far greater extent than is the Left. Of course, a civil war isn't really going to happen, but, by and large, the Right is not a pacifist group of folks. They won't hesitate to defend their homes, businesses and families from attackers.
What happened at Berkeley didn't do the Left any favors.