Celebrities go all out for Clinton at convention

Donald Trump had promised to bring showbiz pizzazz to the Republican convention, but it was instead the Democrats who put on a slick show of A-list entertainers in their bid to elect Hillary Clinton. Shortly before Clinton's high-stakes speech to accept the presidential nomination on Thursday, the Democratic National Convention in Philadelphia brought out one of the biggest stars there is -- Katy Perry. Perry's voice returned at the end of the convention as Clinton and her running mate Tim Kaine