Am I missing something?

Shouldn't..... Everyone knows Ren is the leader of the Phantom Thieves? Like, it was specifically said that he was going to be in the Shido court case, AS the leader of the Phantom Thieves, that's why he ended up in jail. Plus, right there, he was arrested. It's shown that the entire police force knows him in Strikers. Wouldn't his arrest, and therefore his crime be public knowledge? And even if, for some reason, it was concealed, his mugshots are there. Plus, most likely, SOMEONE in the force would have blabbed about the great leader of the Phantom Thieves being some random Shujin Student or something