John McCainJohn McCainSenate votes to elevate Cyber Command in military Senate sends annual defense bill to Obama's desk Trump really can't do much to reduce tensions with Putin's 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 ClintonFeinstein after dinner with Clinton: She has 'accepted' her loss Sanders: Trump is 'a pathological liar' Clintons remember John Glenn as a 'uniquely American hero' MORE and Barack ObamaBarack ObamaObama to appear on 'The Daily Show' with Trevor Noah Brian Williams slams fake news Obama: I absolutely faced racism while in office 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.