Like lemmings marching to their death. The salaryman in the gray suit looks very nervous with the suspicious looking punk behind him. Either that or he is showing him how to do the dance move they are all performing.
This poster would be laughed at and ignored in America. Unfortunately the idiots who ride the subway in Los Angeles pay no attention to train etiquette. People in LA start pushing to get on the train without letting passenger exit first. Morons.