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Ben Carson: There’s a ‘real possibility’ Trump rally violence will escalate

Ben Carson says he sees the "real possibility" of escalation at Donald Trump's rallies.

Dr. Ben Carson speaks during an interview with The Associated Press in his home in Upperco, Md., Dec. 23, 2015. (Photo by Andrew Harnik/AP)
Dr. Ben Carson speaks during an interview with The Associated Press in his home in Upperco, Md., Dec. 23, 2015. AP

Eun Kim