Um… Then you’re not describing a utopia, you’re describing a perfect totalitarian state.

It should not be against the law to be rude or dress up as Batman. That’s insane. That’s the literal end goal of fascism - to give full control of every aspect of society over to the state, and then indoctrinate future generations to be perfect extensions of the state. They just also usually want it to be an ethno-state, but it can also be done through nationalism or ideological purity

In a utopia, laws should be mostly vestigial. You’re supposed to fix the root causes of violence by helping people become well adjusted in a high trust post-scarcity society, not perfectly codify acceptable human behavior and crack down on it with stormtroopers