I had a similar situation with a Texas cop many years ago after being in Houston for a few days. Still had PA license plates on my car. I was at the downtown P.O. and when I was leaving the drive-thru drop area there were 5 lanes to choose from and I didn't know which one to take. Evidently I took the wrong one and was pulled over by a motorcycle cop. Tall black boots, dark aviator shades, racer helmet...the whole over-compensation act.
I told him my situation and gave him my PA driver's license. He wouldn't cut me any slack. When I seemed "irritated" he actually threatened to arrest me for having a "bad attitude". His exact words.
If I had been a black woman instead of a white woman, I'm sure he would have Sandra Blanded me in a nanosecond.
Full Gestapo costume. I know the type. They take that job mainly for the pleasure they derive from asserting themselves.
Unfortunately, unless you have a credible witness (or a recording) the cop can fabricate or exaggerate some reason to arrest you, which is what the trooper did to Bland.
Cops should be made to understand they are not sacred cows and there is no law against a citizen expressing annoyance at being issued a summons, which is what Bland did. The trooper stepped over the line when he took exception to Bland's apparent irritation and unnecessarily escalated the situation.