On Friday, a new media report scrutinized two more stories from the neurosurgeon-turned-politician. Last month, Carson detailed how he protected his white high school classmates the day after Dr. Martin Luther King Jr.’s 1968 assassination. Violent race riots ravaged Detroit’s Southwestern High, which enrolled more black students than white students. Carson, a junior lab assistant with a key to the school’s biology workroom, shepherded his frightened friends to the lab to shield them from the violence, he told the Wall Street Journal. he newspaper spoke with a half dozen of Carson’s classmates and his high school physics teacher: Not one...