If you live in a large city, complete with a public transportation system that is as reliable as it is crowded, you know there's a standard protocol: if you see an elderly, disabled, or pregnant person, you get up and let them sit. Is that simple enough?
Able-bodied people give seating priority to those who would otherwise struggle to stand. Makes sense. However, sometimes people don't get up. Is it ignorance of this courtesy, or being glued to their phones? No matter the reason, when this happened to Olivia Wilde while she was using the NYC subway, she took to Twitter to vent her frustration.