I think everyone knows vaguely that Ataturk banned fezzes, but I never realised he was quite such a fashion cop:
“We shall wear Oxford shoes or alternately, ankle shoes from now on; and trousers, waistcoats, shirts, ties, removable collars, jackets and most naturally, hats.” In an attempt to better explain the cultural significance of the hat, he added, “This is something like a redingote, a bonjour, a smoking coat, a frock. Here it is.” Placing the hat on his head, Kemal concluded, “Some people say it is not lawful to wear it. And I say to them you are absentminded and ignorant!”
The Hat Law, when it was finally passed, mandated death for overt titfer-defiance, and quite a number of people were topped for spurning the topper. It's still on the books, too.