Trump does about-face, defending supporters' chants at reelection rally

Under pressure from his own party, the president had said previously that he felt "a bit badly" about the chant and was not "happy." WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/2xWyH0O WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: http://abc.go.com/shows/world-news-tonight