Caring about whether other people wore masks was hardly mask shaming before there was a vaccine. The masks we wore protected other people from us; people who refused to wear masks were putting US in danger. That’s hardly an overreaction, as nearly 600,000 Americans could tell you if they hadn’t died of it. The real tragedy of the masks in the U.S. is that stopping the pandemic required everyone to care about other people more than their own comfort, and a disheartening percentage would not do it.