I don't believe it, I know it. The first time I was called racist here was by IM2 and it was only because I disagreed with him on some point.
IM2 has a reputation for doing this and I've seen many posters confront him on it over the years so I know I wasn't the only one. Even white people do it (JoeB) and it has become a common tactic in the overall anti-racism strategy. My niece's husband is black and a police officer and even he sees it.
The word "racism" has lost all meaning because there has never been any consensus as to what exactly constitutes racism. It didn't help that they redefined the word to try to exclude blacks from a basic trait that has been part of the human condition for over 200,000 years.