I don't know of anyone claiming to be an anarchist calling for violence, so I missed the backstory.

I have used my violence to save my own life more than once, so I'm absolutely a fan of violence.

The non aggression principle is the guide though. Anarchy is just the non aggression principle scaled to collective actions and interactions. Anyone calling to initiate violence in the name of anarchy is either torturing the definition of defense or just plain doesn't get it.