I got this in a FRmail & got permission to post details as long as I don't name the Freeper (for the safety of the sender)...
There was a paleoconservative Freeper who was banned back in April for racism. He put together hundreds of posts by the victim, and actually not only stalked him through different threads, but he also tracked down the victim IRL by going through his history, came there in person and made threats to him. He's got the creepy feeling that this stalker is also stalking you (I presume because he is extremely angry at being banned).
When was the first troll post you got? If it coincides with his being banned, well...
First one I saw was back in April.
Around the 15th of April come to think of it.
I got mine on April 11. There may have been a few more later, I don't recall. In the evolution threads, and the other science threads, which I know quite well, there have never been any black or jewish issues. I think that stuff is just a diversion from the troll's general dislike of this website -- at least as it affects the science threads.