The point you misinterpret as "pro-Tyler" is that the police officer is probably co-responsible of the manslaughter, and should be charged in addition to (not instead of) Tyler. And this seems infuriatingly unlikely.
By primarily blaming Tyler (who's a super-nasty piece of shit, but that's another issue
Maybe you should reread more carefully. A lot of the replies to me have assumed things I did not actually say.
I am more concerned with... killing people.
How about... instead of military rifles, we use... tazers, rubber bullets, stun grenades and other non-lethal weapons?
That way, we all live, and whoever is accused of crime, can be dealt with judge and jury and so on. In this case, the guy that was murdered by police would be not dead... he may be sore, and also pissed, but that surely beats being dead.
If there is an active shooter and who is a competent marksman and has a perfectly ordinary hunting rifle, approaching them with non-lethal weapons is just giving them more opportunities to kill while they police try to incapacitate them.
Note the "pranker" didn't call in an event that would have resulted in normal police being dispatched (say, a domestic disturbance, or somesuch). They specifically called in a situation that demanded immediate application of potentially lethal force against an already active shooter.