I'm as wary of political violence escalating as anyone, but let's not dilute the term terrorism by applying it to thrown milkshakes the same way people have diluted the term Nazi by applying it to centris--what am I saying, it's not diluted at all, centrists ARE Nazis 
Yeah, don't get me wrong; throwing a milkshake (or an egg, or a tomato) at a politician you disagree with is a minor civil disobedience.
But talking about "We must make these people, and anyone who agrees with them
afraid to voice their opinions, we must threaten them with violence and use actual violence if thats not working until they bend before our demands" is unequivocably talking about terrorism.
Mods just turning a blind eye to that level of escalation and tacitly approving that kind of rhetoric is worrying. That's extremism.
That kind of political climate goes nowhere except to escalation.