Heh. I've always thought that was Frederick Douglass, not Karl Marx. He looks black in that picture. Come to think of it, I never noticed until now, but they are pretty similar looking, except for the whole being of different races thing.

I really think that trying to find rhyme or reason in this is a bit of a mug's game.That woman besides the red table looks like Lizzie II to me. I wonder why she is included.
The drawing the dude next to Stalin is staring at should give away who he is.
Well then, the bloke in sheet in the extreme top left. Who's he, eh?
You think we could get an answer key?
The Greek guy behind Bill Gates? I'm thinking Platon.Who is the Greek next to the Asian guy next to Lenin. I'd guess Homer but I am not sure. And is that Bill Gates sitting right next to him? He looks kind of Asian.
Looks like Georges Clemenceau to me.