Khizr Khan challenges Republican presidential nominee Donald Trump to read his copy of the U.S. Constitution at the Democratic National Convention in Philadelphia, Pennsylvania
{"Image ImageDescription": "Khizr Khan, who's son Humayun (L) was killed serving in the U.S. Army, challenges Republican presidential nominee Donald Trump to read his copy of the U.S. Constitution, at the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 28, 2016.  REUTERS/Lucy Nicholson  TPX IMAGES OF THE DAY - RTSK69M"}