I saw some of them. While there are people that hate people because of their race....there appears to be a large group of people that enjoy "trolling" websites with the intent to inflame readers. Their intention is to make the readers mad, get them in a flame war, or to shock people. Most of them hide under the cloud of anonymity and would never says these things to people's face or even write them if their real name and address were know. It's a reason that a number of sites are now making people post using their facebook.
You mean like people posting that they are hoping Obama wins a 2nd Term.