You see the dilemma don't you. If you don't kill me, precogs were wrong and precrime is over. If you do kill me, you go away, but it proves the system works. The precogs were right. So, what are you going to do now? What's it worth? Just one more murder? You'll rot in hell with a halo, but people will still believe in precrime. All you have to do is kill me like they said you would. Except you know your own future, which means you can change it if you want to. You still have a choice Lamar, like I did.
Most people don't take snapshots of the little things. The used Band-Aid, the guy at the gas station, the wasp on the Jell-O. But these are the things that make up the true picture of our lives. People don't take pictures of these things.