Palestinian officials and activists have lashed out at Israel after a video showing an Israeli sniper shooting a Palestinian protester in Gaza went viral on Monday. <br /> The clip shows Israeli troops celebrating after the shot caused the Palestinian man to go down. <br />It was not immediately known if he died. <br />Israel's military confirmed Tuesday that the video was authentic, but added it was shot months before a recent wave of protests in Gaze. <br />Israeli politicians, however, came to the defense of the shooter, with some ministers saying his action was justified. <br />
