A Palestinian protester holding posters depicting 16-year-old Palestinian Mohammed Abu Khudair, who was burnt in Jerusalem in a suspected revenge attack for the kidnapping and slaying of three Israeli teens last year, argues with an Israeli border policeman during a protest marking the first anniversary of Abu Khudair's killing, near the West Bank city of Ramallah July 2, 2015. Abu Khudair's abduction and killing sparked violent protests and calls from Palestinians for a new uprising against Isr