Who Pushed the ‘Calexit’ Hashtag?

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We investigate connections between Moscow and groups that want to break up the United States. Also, the list of "sexual predator" professors that has sparked an online debate in India. And, the disgusting story of a university roommate from hell. Presenter: Jonathan Griffin Producer: Will Yates Image: A protester holds a 'Calexit' sign / Credit: Chelsea Guglielmino / Getty Images