"Personally, I do not condone violence but see the property of social abusers like Goodwin as a legitimate target." the leveller

I see violence against property as violence.

I would also add that when one sets something in motion one is not in control of others' response to it. (I yell at you, you punch me. I punch you, you set fire to my house.) I suspect that only rarely is the reaction of smaller moment than the initial provocation.

When one participates in or condones breaking a target's windows, does anyone have any idea of what the response will entail?

An analogy: They say that a smart lawyer in court never asks a question to which he or she doesn't know the answer.