They feel it’s a slap in their face because cops are generally haughty and entitled. No doubt were they on the scene when a non-cop customer complained about being denied service for carrying, they’d consider his haughtiness suspect and taze him in the testicles to be sure.
They’d arrest the guy, keep the gun, and then drop the charges after it was explained to them (for the trillionth time) that carrying is legal. Oh, and they’d STILL keep the gun. My God! I will never forget the time a sow pig lectured me about my guns, and how I was unqualified to carry one. This was after a man armed with a carptet knife broke into my car in Alex’ VA, just months after I had gotten out of the USMC infantry, and this fat, ugly, sow had the nerve... Well, you get it.