Dr. Ben Carson, the “anti-Trump”

Peter Baker of The New York Times, John Heilemann of Bloomberg Politics, Peggy Noonan of the Wall Street Journal, and PBS Newshour’s Gwen Ifill weigh in on the split demeanors of GOP presidential frontrunners Donald Trump and Dr. Ben Carson. With Carson’s soft-spoken compassion picking up steam, will the GOP race become a question of nice vs. mean?