What is now happening to Marx’s theory has, in the course of history, happened repeatedly to the theories of revolutionary thinkers and leaders of oppressed classes fighting for emancipation. During the lifetime of great revolutionaries, the oppressing classes constantly hounded them, received their theories with the most savage malice, the most furious hatred and the most unscrupulous campaigns of lies and slander. After their death, attempts are made to convert them into harmless icons, to canonize them, so to say, and to hallow their names to a certain extent for the “consolation” of the oppressed classes and with the object of duping the latter, while at the same time robbing the revolutionary theory of its substance, blunting its revolutionary edge and vulgarizing it.
Cut off the first sentence and tell libs this is from Obama's new book