Booth is seen entering the President's theater box on the President's left; he even opens the door first to make sure the President is there. He then shoots him at a distance of at least 5 feet, again from Lincoln's left side. In reality, Booth entered the box from behind the President, and shot him at very close range in the back of the head. Also, in real life Booth shot Lincoln immediately after the line "...you sockdolagizing old mantrap!", thus insuring that the audience laughter would drown out the sound of the shot (Booth was very familiar with the play and knew just when to shoot). In the film, the line in question is uttered before Booth has even made his way into the box.
