Related, laws being passed to protect people from being discriminated against on the basis of their hair.
https://apnews.com/article/hairstyle-texture-discrimination-race-and-ethnicity-d6fd44b0226d4cd2d089953972377654
Honestly just fuck everything about sumptuary laws.
That's the issue with the fragmented authoritarianism that comes with American style federalism. Combined with how schools are run pseudo-democratically with a sizable and energized fascist voter base and even your cool, chill school districts can suddenly become extremely reactionary! Fun!