A similar attack was mounted against Herman Cain, and they finally had to revert to some kind of sexual innuendo, to drive Cain off the scene.
And that one was wholly contrived by David Axelrod.
Cain did that to himself.
Dr. Carson and other black conservatives who ran away from the liberal plantation terrify their white liberal owners thus must be whupped... for if one escapes others might get the same idea. Liberal diversity is only in skin tone (non-white preferable) and sexual orientation (heterosexual optional) and religion (except Judeo-Christianity) diversity in thought and politics NO! The collective demands but a single mindset all others are extremist and not allowed!