I think we're arguing from two parallel (and never converging) viewpoints.
Marxist analysis reduces everything to "the class struggle". So, looking at racism from a Marxist perspective, you end up with the viewpoint that capitalists need a) cheap raw materials b) a large pool of cheap labour; and c) new and ever expanding markets for finished products. Hence imperialism and colonialism, and hence racism as a product of imperialism and colonialism which are themselves products of captialism. Yes; Marxist analysis prduces a basis for analysis of race and sex inequalties but essentially these are (in classical Marxist theory as I understand it) spin off from the class struggle. Important spin-offs (in some respects, the sort of spin off that turns out to be more interesting and important than the original series). Now, if you create this bastard thing "classism" you're trying to create a spin-off that is really about what the original series was supposed to be about, and those never end well in my experience (though I haven't seen The Sarah Jane Adventures admittedly).
Re: comment of great density the first.
Marxist analysis reduces everything to "the class struggle". So, looking at racism from a Marxist perspective, you end up with the viewpoint that capitalists need a) cheap raw materials b) a large pool of cheap labour; and c) new and ever expanding markets for finished products. Hence imperialism and colonialism, and hence racism as a product of imperialism and colonialism which are themselves products of captialism. Yes; Marxist analysis prduces a basis for analysis of race and sex inequalties but essentially these are (in classical Marxist theory as I understand it) spin off from the class struggle. Important spin-offs (in some respects, the sort of spin off that turns out to be more interesting and important than the original series). Now, if you create this bastard thing "classism" you're trying to create a spin-off that is really about what the original series was supposed to be about, and those never end well in my experience (though I haven't seen The Sarah Jane Adventures admittedly).