I have not read that thread that you mention, however I was surprised by some of the responses concerning interracial dating in other threads. Still it's hard to judge(how many people hold that view), a couple of very vocal individuals can make it seems like a lot of people agree with them.
Or, as anyone who pays attention to AFer sites can attest, one person who creates a ton of accounts can make it seem like a lot of people agree with him.
You don't think the leftists would love to ruin or discredit FR by smearing it from within? You don't think at least one would try?
Until I see a long time Freeper who is racist but never gets banned, I will know that FR is no home for racists.
Which is how it should be. Racism belongs in the only political home compatible with it- the left.