..the truly hated: the poor.

see, what you do is take one class, divide it, and then watch the fight stay within that class. as evil as it is, it's pretty effective. Example: take a look at the story of the molly mcguires: irish (scum at that time) formed America's first union. the mining company (with a li'l help from the Pinkerton agency) got some scabs by enlisting the recently emancipated blacks. It makes sense to hate the mining company, but it's a lot easier to hate the scab who is taking your job.