This is minority report bullshit.

If you have a known murderer that is free presumably he's already paid for his crimes, no? So luring him into doing it again is extremely anti-ethical to me.

There's no pre-crime... yet. This is where you get profiling and abuse of power everywhere.

IDK how we can say manipulating people into commiting crimes is a good option. That's a crime. If we're going to commit crimes in the name of "preventing crimes" then why not go and arrest/kill the suspect directly? It's simply a different crime, right? But since I have the monopoly on violence, I can do what I want and case closed.

How can this be a good option?