“True Marxism, if you wish to call that the "communist faith," advocates the revolution of the proletariat - in essence, violent class conflict, or in other words, the ends justifying the means” Nope. Marx DESCRIBED capitalism in term of violent class conflict by essence, meaning the workers and their bosses haven’t the same interests in some points e.g. workers wanting big salaries, management wanting to pay them as low they can… So the possible answer (because each class defend its privileges) if to fight for yours rights.
The French Revolution wasn’t a “Communist” Revolution; it was in fact a “Bourgeoisie” Revolution which sized powers from the Nobility illustrated Marx’s comments (Commune de Paris as well). And it was really violent... Federalist against Etatist, Blues aginst Whites, and a little bit of Religious wars...

“Meaning well does not absolve you of crime”: No it doesn’t. But I would like to see a book about the Crimes of Christianity (or others religions) written on the same parameters, of Crimes of Capitalism. You know kind of: capitalism is guilty of the millions of Irish dying of starvation because market economy resolves every thing and the thousands of Boers (and the Indian mass deportation and killing) killed or let to die because some one wanted their gold mines or their lands…