Of course never say never -- any group is bound to have a few lunatics. But I would characterize it as very rare on the right and commonplace on the left. That in itself says something.
Commonplace? No, skewed toward the left, yes.
Let's face it, there's a ton of left-leaning people who's antics don't show up on INGO. Is it the frequency bias? Is that what I'm thinking of?
They're not all riotous protestors and just like we're not all hate-mongering nazi's (like we're being called).
But, yeah, now the left are resorting to some really dirty tactics. Let's hope the right can take the high ground.