More than likely it's person specific, too. Give some people a uniform, badge and a vehicle with flashing lights and they think they are "God". If they're youngish it can be even worse.
Friend recently had a run-in with the State Patrol that ended badly. He owns a tree removal business and specializes in hard-to-remove trees in yards, being licensed, bonded and insured. After a day's work he was heading home with his crew in a couple of his trucks when he was stopped for some reason by the South Carolina State Patrol. One of his employees was drinking a beer, but he was not. He was harassed by the SP and told to submit to a breath-alyzer test. He was angry and refused, after repeatedly telling the officer he was not drinking, whereupon he was taken to a facility where he took the breath-alyzer test and blew a 0.00. Trooper was surprised and embarrassed and took my friend's licenses. He was told he has to do 20 hours of community service to get them back. He has retained a lawyer. I hope he sues, and wins.