Curfew – Local curfew ordinances in my opinion violate the 1st Amendment, specifically freedom of assembly. Also, they don't work. If someone is planning on committing a crime, they are going to commit it. They won't care whether or not they can legally be out at 2 AM.
Not to say I am for curfews by any means, but to be fair, it's not about hoping criminals stay home. If you have a curfew, it makes it harder for criminals to freely move around at night. For instance, someone who just burgled a house after curfew is taking a big risk if they are stopped by the police, who would have a legitimate reason to stop them.