MARSEILLE, France (Reuters) - In a scene taken straight out of an American Wild West movie, masked men robbed a freight train in southern France after blocking the railway tracks with shopping carts and metal beams. The daring attack on the northern outskirts of the southern French city of Marseille saw a passenger train hurtling into the blockade forcing it, and a cargo locomotive behind it, to stop. Attacks on trains arent new, but it is a pretty rare phenomenon, David-Olivier Reverdy, a police union official in the area said.