Article continues below advertisementJournalist George Stephanopoulos said that while he was "horrified" by the shooting incident at the White House Correspondents' Dinner over the weekend, he was also "a little surprised" this hasn't happened before.The former White House Communications Director under President Bill Clinton told journalist Dan Abrams on his SiriusXM show that the event was a "rich target" because it crams thousands of people into the basement of the Washington Hilton, often including several people in the presidential line of succession at once.