I don't think people supporting Ron Paul really look that deeply into his politics. He's toned down his rhetoric lately, but yes, he did publish newsletters with strong racial biases. Twenty years ago doesn't excuse the fact that he did it. He still did it. Twenty years ago he wasn't running for the presidency. Twenty years ago he was a 56-year-old man with the wisdom to know better than to publish something like that. A 56-year-old man should be smart enough not to let a newsletter go out in his name that states that order was restored in the L.A. riots following the Rodney King verdict "only after the welfare checks were handed out." That is an unconscionable statement from a grown man.
But we don't have to go back twenty years. Let's go back to 2008 when Ron Paul gave the keynote address to the John Birch Society's 50th anniversary dinner. That was four years ago. This isn't "the distant past," this is the last election cycle. He's not giving up these racist beliefs, he's just putting them aside while it's politically convenient.
Paul has some good ideas. And they make a lot of sense. But so did Mussolini. It's not enough to make the trains run on time, and it's not OK to accept radicalism for the few benefits a presidential candidate may offer.