It's an effective ad against something of a straw man. I really haven't heard anyone say that opposition to, say, the public option is rooted in racism. Maybe someone has, but it's not exactly a meme. Conflating wider worries about the intensity of vaguely articulated loathing of Obama as racially tinged with specific worries about health insurance reform is, however, a useful piece of sophism. But really: a total government take-over of the healthcare system? For a reform where almost every newly insured person will get coverage under a private insurance company and get prescription drugs from private drug companies and get treated in non-government-run hospitals? Sigh.