Keep the Peace
It’s often difficult to stay calm when anything unfair happens. You want to lash out, and that’s a normal response. Some people can manage those situations peacefully, but others can’t. Therefore, everyone’s even more uncomfortable during the trip.
Looking to Argue
It doesn’t matter how you approach the situation. You just don’t know how the other commuter might react to any remark you give. They could want to get physical and start a fight, and it’s not worth a black eye to have a seat on public transportation.