Carson has said he would require any Muslim candidate for the presidency to address the question of sharia and explicitly renounce any belief in it. After such repudiation Carson would be quite willing to support a Muslim candidate. I suspect that most Americans, once made aware of the foregoing facts, would feel that way, including many Muslims.
I want to be like the man on the subway who told the operator about the woman's seizure, because as soon as he did, people followed suit and offered help. We have the power to choose whether to justify passivity or actively decide to do the right thing, and as a society I believe we ought to break free from our psychological tendency to just stand by.