Arthur tells us about one of the Right's favorite little rhetorical tricks. You see, calling them out on their misogyny, racism, and homophobia is just showing "intolerance." Whatever.
As for Sullivan and the Bell Curve, it is fully clear that he lacks the ability to comprehend any serious critique of the "science" of the book. But, more importantly, anyone who reads that book and doesn't see it for what it clearly is - racism dressed up in a pretty wrapper of pseudoscience - needs to have their detectors adjusted.