You folks exaggerate much? We're talking about one extreme situation that demanded extreme measures to save countless more lives from being lost and some of you are reacting as if tomorrow morning we are going to find lethal police robots on every street corner blowing to bits every person who does so much as jaywalk. Get real people!
There is no body armor in existence that will protect you from a high powered rifle at close range. Even being shot in the body armor by a small caliber hand gun is like getting hit with a sledge hammer wielded by a very strong man! Lets put you at the front of that team to be the first one mowed down by his gunfire and see is you still think that's a better idea than letting a machine do the job instead.
Anticipating just such a situation like this and being prepared for it perhaps? That's their job. Police work goes a lot deeper than just the guy on a motorcycle that writes you a traffic ticket. Anarchy is the alternative.
So are guns. So by that logic the police shouldn't even be allowed to carry guns. In fact, clubs were also instruments of war at one time, so the police shouldn't even be allowed to have their batons (which are nothing more than modern clubs). Nope, this simply isn't a valid argument.
Oh come on, we are talking about one incident where a machine was used to save the lives of countless more innocent people at the expense of the life of one murderer. This is hardly a "fully controlled police state under global governance". Or do you believe it would have been better to save this murderer's life at the expense of letting him continue to kill more innocent people until he ran out of ammunition or just got to tired to hold his rifle anymore?
A robot with rubber teeth? To do what? Playfully nip at the guys ankles until he gets so annoyed he goes home? In which comic book did you get this idea?