But even then, [violence is] never justified unless it's in self-defence
This isn't true either (but at least is somewhat subjective).
I strongly agree with your general point, but could you explain what you mean by this comment, because it looks problematic for any reasonable understanding of self-defense (which I would expand to include defense of others).
I have found this most wonderful (if fairly lengthy) article, and thought you would enjoy having it brought to your attention.
It is so good, I think we should include it among the references in the "Politics is the Mind Killer" wiki page. But, before that, I submit it to you, and ask you: is there anything in this article that would warrant its exclusion from this site? I mean, besides the fact that it is about politics, and written by a notorious Social-democrat (And is that in itself grounds for exclusion?).