his quotes get taken out of context a lot.

You don't say..

The way to show political power lies open to the working class. Insurrection would be madness where peaceful agitation would more swiftly and surely do the work. In France, a hundred laws of repression and a mortal antagonism between classes seem to necessitate the violent solution of social war. The choices of that solution is the affair of the working classes of that country. The International does not presume to dictate in the matter and hardly to advise. But to every movement it accords its sympathy and its aid within the limits assigned by its own laws.

That's not the same as "voting is just about the only way to get this shit done". It's obvious that he believes that violence must be used if necessary.