Earlier quoted context omitted.
To be fair you are comparing an adversarial job with a cooperative one. A crane operator won't feel unsafe, or confronted by someone he calls hostile. This is no excuse whatsoever for the multitude of outraging problems in the system, but the comparison isn't straightforward.
Quite the opposite. The adversarial job should have higher standards of conduct, not lower.
The standards of conduct need to be draconially high, because a police officer has the power to ruin a person's life.