John McCainJohn McCainA guide to the committees: Senate Webb: The future of conservatism New national security adviser pick marks big change on Russia MORE, speaking in Memphis on the 40th anniversary of Dr. Martin Luther King's assassination, said he was wrong to vote against a federal holiday in honor of King. The audience clamored and booed McCain when he acknowledged the vote -- see the video below.

Hillary ClintonHillary Rodham ClintonPence filling out voter fraud task force Jimmy Kimmel doesn't rule out Clinton cameo at Oscars Chafee: Negative coverage of Trump ‘tiresome’ MORE and Barack ObamaBarack ObamaSpicer: Town hall demonstrations include 'professional' protesters President Trump an anti-Semite? Talk about #FakeNews New regs for Thursday: Apples, fish, missiles MORE also spoke about King today, Clinton in Memphis and Obama in Fort Wayne, Ind.

See Clinton's speech here. See Obama's speech here.