The shooter at a Donald Trump rally in Pennsylvania Saturday is dead and one rally attendee was killed, the Butler County district attorney told the Associated Press. Trump was led off the stage by Secret Service agents in Butler, Pennsylvania, Saturday evening with blood visible on his face after shots rang out at 6:11 p.m. ET while Trump was speaking. The former GOP president is safe, the Secret Service said in a statement. Trump reached toward his face and dove behind the podium before Secret Service agents piled on top of him. In footage posted online of the rally, Trump appeared to ask th…