The footage, to gamers who like to play “Grand Theft Auto,” looks familiar. From the point of view of a gunman looking for targets through the speeding car’s window, unsuspecting people take bullets in the chest, and crumple to the ground.
But it’s not “Grand Theft Auto.” It’s propaganda created by the group that calls itself the Islamic State, also known as ISIS. And the people lying motionless on the ground are real. Then they die many times over on social media, after the Islamic State posts these executions on Twitter and elsewhere online.