General Discussion

You seem to be trying very hard to construct a paradigm where if people on the left get violent, it's because right wing provocateurs were just watching and waiting to nudge them in that direction and escalate things beyond what the people on the left intended.

That's just silly. People on the left are just as capable* of becoming violent as anyone else without needing that extra push to do so. It's a hot button issue, people are passionate in their views, and people get carried away. No provocateurs are required for this. It's simply human nature, and people on the left are by no means free of human frailties like overreaction, overexcitement, getting caught up in the moment, etc., which is very probably what happened outside the DNC.

* I don't believe people on the left are just as likely of becoming violent as those on the right. Recent history is pretty clear that political violence is more likely to come from the right than from the left, but that by no means reduces the capability for violence from people on the left, particularly on such a fraught issue as the Israel/Hamas conflict.