First of all - yes, violence is the Nazi language, and probably the simplest way to get through to them. Pain and hurt is what they signed up for, and I wouldn't mind giving it to them.

But also consider:
https://crimethinc.com/2019/04/08/against-the-logic-of-the-guillotine-why-the-paris-commune-burned-the-guillotine-and-we-should-too