Pledge of allegiance
You’ll have been used to it as a normal part of your school morning, that moment when you all stand up, gaze at the flag, and recite the Pledge of Allegiance. Distilling the wonder that is America into a few lines, and bringing the country together before AP Chemistry.
Across the world, though, this makes their brain explode. The idea of making children pledge blind loyalty to a government does seem strangely authoritarian, but patriotism is a huge part of American school life. It’s just normal to us.