That's what I hate. The cops are looking to put this kid down like a rabid dog. I'm sure that suits a good chunk of people just fine. But I think it is disgusting and I think it is at our (societies) expense much more than it is the perpetrator. I want to have this specimen in custody and add whatever possible to our understanding of what causes people to do things like this. We gain nothing from gunning him down in the street.
Besides that, if every time there's a public enemy running around we give the police a pass to kill them on contact it creates a situation in which someone can be misrepresented in the media and will never have an opportunity to defend their self.