Denzel Washington left many fans shocked after appearing to lash out at an overzealous photographer while attending the premier of his movie Highest 2 Lowest at the Cannes Film Festival on Monday. The actor headlines the movie, his fifth collaboration with Lee, and appeared at Cannes for the first time since 1993’s “Much Ado About Nothing’ brought him to the festival.   The Oscar-winning actor, 70, was seen pointing his finger in the face of one of the snappers during the dramatic exchange. As Washington approaches, the photographer is seen trying to laugh off the confrontation and he puts his…