Not that I don't think Rush is a racist, he probably is, but you can not use those quotes to prove it.
Examples:
Caller: "The republican party should devote most of thier resources to capturing the black vote. They must reach out to them to win this election"
Rush: "They are 12 percent of the population. Who the hell cares?"
Caller: "We have our own culture, our own unique identity that is different from the american culture; it must be addressed by this government"
Rush:"Take that bone out of your nose and call me back."
Rush:""Have you ever noticed how all composite pictures of wanted criminals resemble Jesse Jackson?" "
Me: They do. Not because he is black, but because he has no outstanding features, he is just, totally, average.
Rush:"A gang-member-type-guy"
Him:
OK, so he looks more like a Sissy than a gang member, but he IS trying hard.
None of my quotes are true, BTW, but I am sure they follow the general sense of the conversation that Rushidie's comments were lifted from. Context is all, show it or STFU.