This is the kind of stuff where police really get bad reps. You don’t control the world just because you have a badge. There are good reasons for a car stop, this is not one of them.
The FR BLM cop hater chapter will hate this story, but in my local small town we had a local officer get flipped off and cursed at a red light and he turned and followed the car and in a few minutes lit them up and they started in on him about the first Amendment and abuse of power and he replied simply your tags are expired and they were according to the plate. They raged and demanded a sergeant and one appeared and they started up again about being abused and he asked them, is your registration expired? Yes, but...
In the end their registration was expired as well as their insurance for their troubles they got their car towed as under state law it couldn’t be driven. All this just so they could flip a cop off they hated and the Norman Einstein’s did it with clearly expired plates. Brilliant!