Some of the things in the ad refer to significant problems. The brownshirts of anti-fa have had malign impact in places like Berkeley, and even here in Madison they allegedly ambushed and attacked a man coming out of a restaurant a block away from me, presumably "pour encourager les autres" (I've eaten at that restaurant a number of times). BLM has participated in and inspired some violent riots. Here in Madison their protest was peaceful. A startling proportion of the movers and shakers in media and arts seem to have started believing their own press releases, and consider Trump a racist and fascist and nazi and what-all else: and the rhetoric is often explicitly violent. But aside from Hodgkinson I don't see a lot of action based on it.
The dangers tend to be concentrated in a few places (I'm not forgetting that attack a block away!), and the rest of the country is calmer. The NRA has always been a bit on the shrill side, (like all such political organizations) but this is over the top. The violence problem in this town isn't from the political street thugs, but the Milwaukee and Chicago gangsters.
I've been predicting that if the existing political street thugs weren't dealt with, we'd start to get right- and center- political gangs as well, and that that wasn't going to end well. It sounds as though the NRA isn't waiting, but the call isn't explicit--plausible deniability. I'd be interested in seeing if Dana is still a representative next week. I hope not.