Cops don't learn. Its institutional, it seems. I heard a story on 98.1 yesterday talking about how the Johnson County Sheriff dept is having trouble finding ppl which would normally be an issue, but evidently they are on the verge of the largest hiring need they have seen since the '80's. They had the Sheriff on and the first thing he said is "we need people with guts!".
None of this is changing until they hire a different personality set and train them differently, imo.