I don't think the average private citizen understands the effects of what LE sees day in and day out. Whether it's actual crime scenes or crime scene photos, they see it every single day. They do try and compartmentalize it but it does get to them. I have a friend who was a seasoned homicide detective in Fresno CA for many many years before he went into undercover work (online) catching pedophiles luring kids to offline meetings. He'd seen A LOT, working homicide, but he was NOT prepared for what he would see working that kind of field. Nor were the people working with him, prepared. Most of them had to be rotated out after a very short time, according to department psych evals because seeing that kind of thing is TOO MUCH for most normal human beings. I know another LE who was the first on the scene of a mother and two children stabbed to death in their own home. Drug deal gone bad and mama and babies paid for it. The suspect was actually hiding in the attic of the very same home, AT the time the officers entered. The effect that scene had one the officer I know, was so intense he HAD to call for back up and step outside with his partner, and pretend like they didn't know the suspect was still inside. He was prepared to enter the attic and blow the into the next life.
We read about these things in the news, sometimes we see crime scene pics, sometimes we see ME reports but the men and women in blue who are the actual boots on the ground that actually SEE this stuff day in and day out, these are the real heros in our society. So, when one of them goes a little sketchy at a presser, it's a good bet there's a legit reason why.
moo & all the usual disclaimers