the dog was protecting its master, obviously the cops were feared, stood off, the dog sensed this, as they can simple and attacked, wasnt a vicous dog because if it was it would of bitten somebody else in the crowd, cops were acting like it was some crazed gunman stood off lol, trigger happy yank cops with guns, simple thing would ov been to get his baton out if the dog was gunna bite it would ov bit the truncheon, and then it still took them ages to attend the whole cause of the situation ie the guy on the floor....................... ah well