[DoodleDawg]

The cop should not expect a rational response from a clearly irrational person walking through traffic with his pants down.

And shooting him was a rational response to that?

[PGR88]

And shooting him was a rational response to that?

No. If you say "get on the ground" to a rational person in that situation, their response will be to get on the ground. For a clearly incoherent or irrational person, one should not expect a coherent response. One would assume the cop would have been trained to consider alternative evaluations and responses.