VIDEO: Boos erupt at DNC during invocation

A chorus of boos, and chants of "Bernie," could be heard during the invocation at the Democratic National Convention after the reverend mentioned Hillary Clinton.

Watch the video above.

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PHOTOS: The 2016 DNC in Philadelphia

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Former President Bill Clinton hugs his wife Democratic presidential nominee Hillary Clinton during the final day of the Democratic National Convention in Philadelphia.

J. Scott Applewhite/AP Photo