I think it’s a bit far to call them terrorists,

Did you mean "a bit unfair"? Because I don't see how anybody would be terrorized by this. It's clearly illegal but using terrorism here is very problematic, especially since what the military does to people in the middle easy is actual terrorism but not called that.

Afaik the "anti-Semitism in Labour" was basically a made up smear by the Labour Party themselves to prevent Jeremy Corbyn getting elected. Not sure about other instances though.