When is political violence justified and when isn't it?

Let’s try to get a comprehensive answer that covers BLM/Antifa, what happened yesterday at the Capitol, and any political violence that has occurred in this nation (or other nations) and will happen in the future. Is it possible to come up with an answer that isn’t hypocritical or doesn’t say “it’s okay when I agree with the cause”?

Do you condemn all political violence, except in say an extreme case where the government itself is violent (such as the violent crackdown on the Syrian uprising that sparked the Syrian civil war), or do you support some and condemn others depending on the aim of the violence?