This guy was going to shoot at the police anyway, they just drew shots at the robot which was destroyed. How did it help?

Are you really serious? Think about what you just wrote.

This guy was going to shoot at the police anyway,

That’s your first clue.

How did it help?

By no police officers being harmed. I’d say it helped quite well.

I’m not sure why you’re siding with a dude who is willing to shoot at people, cops or not.