On the spring day when Lia Thomas made history by winning an NCAA swimming championship as a transgender female, protesters gathered outside the arena to do what protesters normally do. Chant. Wave signs. Wear T-shirts with slogans.
"Support fair sports," they yelled.
Thomas, who transitioned in college, was too fast, too strong, too male to race against cisgender women, they insisted. Their complaint was typical of a backlash that has grown louder as transgender female athletes become more common and successful.