re: Should the universities and their faculty be held accountable for the violence?

Universities and the administrative/support staff that allows it, yes absolutely.

The faculty, not so much. Are there liberal arts professors beating the drums and fanning the flames of the rhetoric, sure, but there are a whole lot more of us just trying to teach science/math/engineering without letting politics enter in to it. We can only do what the administration allows.

If faculty joins the protests, as is their right, and things go sideways, they’re on their own and have to deal with the ramifications as anyone participating would.