Ron Paul has been getting a bit of flack from some newsletters published in the late 80's (and some into the early 90's). The remarks in the newsletter are outlandish, so much so that it's impossible for me to believe that any right-minded individual would put anything like that into the public eye.
Here are some links for your own research. Paul isn't a racist. He made a mistake by not editing the newsletters that went out under his name. He took responsibility for it. Let's move on.