I have met rude cops and super friendly cops, ones who get annoyed when you challenge them doesn't surprise me.
Do they resent being challenged or shown wrong at a higher percentage than other professions? I don't know, that would be an interesting thing to study. Given they tend to be more of a type A personality (a necessity of the job) it might make sense if there are elevated rates compared to many other professions but certainly not unique to cops.
It's not about just them getting "upset." it's about them having the authority to arrest you and use force on you -- up to and including lethal force.
But, hey.
all things being equal, right?
I had a friend talk to to Cops outside in his yard after a woman filed a false harassment complaint simply because he followed her after she dinged his LEASED BMW 6. If you know about leases, he gets charged for any damage.
Caught up to her when she parked at her home. He told her he would be glad to get her insurance info and leave, but she started yelling at him -- trying to intimidate him. When he said he was going to file a police report and left, she dialed the Cops and reported him harassing her.
The Cops lied to him saying she had witnesses to the harassment and him threatening her. He laughed and said that was a lie. How can there be a witness to something that never happened? At that point the cops got angry that their ruse failed, and they threatened to arrest him. He told them to get a warrant. He also said if they don't leave his property, he'll file a trespassing complaint.
That really pissed off one Cop. He started saying things like, "We can go anywhere we f-ing want, and if you don't like it, you can f- yourself!" With that, he started to open the front gate, and the other Cop grabbed the gate and stopped him.
A badge and a gun -- it's a helluva drug.