Being a policeman is a really stressful job, no matter what, you see brutal and fucked up thing on everyday basis
How many "brutal and fucked up things" happen on a daily basis in your city?
There are nearly a million police in USA... you think there are a million "brutal and fucked up things" that happen daily?
You want a dangerous and stressful job? Try crab fishing in the Bearing sea...
Cops have it easy... they carry a gun... claim ultimate authority... literally get away with murder... harass people, and steal their money/drugs