Former Secretary of State John Kerry raised the possibility that a victory by President Trump could provoke a revolution in the United States, claiming that Republicans have a history of denying voting rights to Democratic voters. “If people don't have adequate access to the ballot, I mean that's the stuff on which revolutions are built,” Kerry said during a virtual appearance at the Copenhagen Democracy Summit. “If you begin to deny people the capacity of your democracy to work, even the Founding Fathers wrote in the Declaration of Independence, the Constitution, we have an inherent right to challenge that. And...