An interesting article on the strengths and weaknesses of non-violent protest, specifically applied to the situation in Nazi Germany. Linking it was weird, as it was a 2-part post (how fancy!), but you should be able to figure it out. Also, I should point out that the source calls herself the Neo-Neocon. I'm not sure what that means, but I'm sure some people hate that.

Excerpt:

Nonviolent resistance to totalitarian governments can be very difficult because of Draconian retaliation against such efforts and the resulting climate of fear among the populace, as well as the constant propaganda designed to reduce dissent to a minimum. But not all totalitarian regimes are alike in how far they are willing to go to crush resistance. And even the same totalitarian regime is not always willing to go equally far to crush resistance under all circumstances at all times against all comers.