Where do they come from?
The fringes of the underbelly of the most extreme Charedi faction. Same place Srool-Doovid Weiss, Billy Mo Weberman (not the one who recently made the news), Moishe Aryeh Friedman who went from NK to getting his boys into a Belzer girls school, and other professional protestors without a cause come from.
Difference here is that ShaBaK shtinkers tell the Ramat Beit Shimush hooligans what to do and where to strike. Remember, elections are coming up.