everybody knows that the best way to deal with people having a different opinion is to be violent towards them
maturity at its finest
even better than that is when you destroy your own campus because "wahhhhhh he's a meanie-bo-beenie!!!!1!!111!!1111!!1!!"
I don't think anyone disputes that though. Even in the most radical left-wing circles, you aren't going to find many people who want to actually legalize violent civil disobedience.
From a liberal perspective, the problem with the conservative mantra against violent protest is that they're usually exaggerating and over-generalizing the protestors as violent, and they're using it as a tool to make the issues illegitimate. Their mentality is basically, "A small percentage of BLM/Hillary supporters/whatever broke a window and flipped a cop car, so the stuff they're protesting about doesn't matter."
The way I see it is that violent protest is inherently symptomatic of problems in society, and it doesn't actually go away unless you fix the problem. It still means we have to arrest the protestors and disperse the crowds, but the long-term solution is to actually take a second look at the issues they're protesting about.
that's not progress then
that's chickening out and just giving them what they want because you want them to stop destroying stuff
it's literally Godfather-like capitulation
if some guy you've never met before came into your house, smashed all your dishes, peed all over your walls and bed and keyed your car with a blow torch, all the while demanding to be treated fairly, would you reasonably wish to treat him fairly? yeah, probably not ever
it seems people have just up and forgot that progress can be achieved through non-violent means
MLK's civil rights movement
Gandhi's movement against colonialism
the list goes on
meanwhile, the more significant revolutions (excepting the American Revolution) that were fought through violence and enforced through violence have pretty much collapsed underneath their own paranoia and destruction
French Revolution
Russian (Communist) Revolution
yada yada