Yes, the police caught the guy, bravo! If there is any justice in this world the perp will soon leave this world after a short drop and a sudden stop. We all know we won't get that lucky though.
The point is, even though the Police got their man and hopefully protected who knows how many future victims there were already two victims. By definition the police can't act until there is a crime, until there is a victim. We don't want them to be able to act any sooner, arrest/detain people based on what they might do or what they are capable of doing. Hey, we are all capable of murder.
But I digress. We, you, me, the teacher down the street, the Vietnam vet up the street the other way, we all have to be able to defend ourselves because the Police will only be there to draw chalk lines and maybe arrest the perp(s) after the fact. In other words gun-grabbing lib-lurkers: wake the {expletive} up to reality and stop trying to disarm us!
Precisely.