Presidential assassination attempts throughout US history

Presidential historian Mark Updegrove speaks to ABC s Linsey Davis about past shootings targeting political figures. Subscribe to ABC News on YouTube: ABC News Digital is your daily source of breaking national and world news, exclusive interviews and 24, 7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: Watch 24, 7 coverage of breaking news and live events on ABC News Live: Watch full episodes of World News Tonight with David Muir here: Read ABC News reports online: ABC News is the home to the, 1 evening newscast World News Tonight with David Muir, Good Morning America, 20, 20, Nightline, This Week with George Stephanopoulos, ABC News Live Prime with Linsey Davis, plu