Fair enough, thats your opinion.
As I understand it, Marx considered religion to be the "opium of the people," a kind of self-medication to deal with the world's indifference toward us. Dawkins thinks that it is pre-scientific thinking that persists largely because children are naturally gullible which he perceives as an evolved behavior.
Marx and Dawkins are both from the same school of thought. Religion should have no place in a society. Dawkins and Marx agree on that, for slightly different reasons perhaps but their goal would be the same and in that way Dawkins is marxist.
But hell, as long as you're bringing up schools, let's discuss the way Creationists belong to the Goebbels Big Lie school.