If you actively seek to murder people, I will actively ensure you are put in jail. I apply the same logic to fascists. Fascists only gain power throughout history when the left starts to actively degrade people's lives. This is why the left historically has shifted to reform as the ethical approach and have gradually shifted more liberal.
If you cannot convince anyone with your words, you certainly won't with your violence.
If you use violence to bring about your preferred society, you enable violence as a tool of oppression by that society.
