That does not mean that Foval's group actively incited violence
Umm, yes it does. They took deliberation action to elicit a violent response. Do you have a problem with basic definitions?
A sizable portion of Trump-supporters are still mean-spirited violent assholes.
And yet the worst of the violence was directed at Trump supporters in places like San Jose, their have been countless death threats publicly posted on Twitter against Trump, people posting pictures of themselves stealing Trump signs, etc. But you don't get wall-to-wall coverage about that, do you?