> You mean Marxist-Leninists, Marxism in and of itself doesn't require violent revolution.

Well, maybe not require, but

In depicting the most general phases of the development of the proletariat, we traced the more or less veiled civil war, raging within existing society, up to the point where that war breaks out into open revolution, and where the violent overthrow of the bourgeoisie lays the foundation for the sway of the proletariat.

Marx/Engels -- Manifesto of the Communist Party