Is violence ever defensible in politics.

I think it is defensible occasionally. That's my for sure opinion. However, the one problem I can find that doesn't have me fully supporting violence in politics is that human rights movements are too easy to subterfuge from the inside. If some people actually found a secret way to tell and weed them out, I would trust them a lot more at their word but until that happens, it's sort of a grey area. Not all who claim their good, are good.

I don't believe in the bible much but it was correct when it says beware of a wolf in sheep's clothing. I think it was referring to false prophets but I'm more referring to subterfuge. Their the most dangerous in my opinion. Everyone wants to believe in good, therefore it's the greatest logical fallacy and the one paradox standing in the way of true human improvement.