When people cross the street looking at their phones. When people talk on their phones on the train/bus. When people have loud conversations on the train/bus. When people block the subway doors. When people put their bags on seats on the train bus. When people sit on the aisle and leave an empty window seat. When tourists use use commuter buses/trains. When groups of tourists block anything. If you're on holiday, can't you relax in the morning and give everyone a chance to get to work?