I don't particularly agree with such a decision. A more appropriate measure would have been tear-gassing his ass... But that's just me.
I can see the logic from the LAPD perspective, though... (and keep in mind, I despise them) From their viewpoint, he was a rabid dog, and needed to be put down.
Either way, I'm sure the LAPD will now return to the safety of their local Starbucks... After they get done with this mornings' funeral procession (which I saw going the other way, on my morning commute), of course.