[Question] Why is violence against AI labs a taboo?

People like Eliezer are annoyed when people suggest their rhetoric hints at violence against AI labs and researchers. But even if Eliezer & co don’t advocate violence, it does seem like violence is the logical conclusion of their worldview—so why is it a taboo?

(By violence I don’t necessarily mean physical violence—I mean more general efforts to disrupt AI progress, including e.g. with coordinated cyber attacks.)