It was always officially called "routine police control".
Polonius, I think your paranoia has reached an all-time high. I've seen about 100 police controls in the last 5 years, and not a single one was oppressive in the slightest. They turn up, they check the documents, they sometimes test for alcohol, they check the equipment on the bus, they check the lights/horn/etc and they're on their way. They aren't oppressing anyone, or doing anything other than making sure that the democratically-passed law on road safety is obeyed. More to the point - they're also making sure that the bus isn't a danger to anyone else on the road.
I'm very happy that Poland is the kind of country where politicians are not above the law. I have to inform the police about using buses - and they check me. Why should Szydło be exempt from it? A single police control in several months of using the bus is really nothing.
No matter how hard you try Polonius, it's pretty obvious that you want the PiS-Politburo to be exempt from all laws. Did you know that in East Germany, the SED Politburo carried special passes that allowed them to be exempt from any and all road rules? It sound like you want the same.
Anyway, have your fun -- five more days of Kopaczland.
And another 4 years of PiS in opposition. Doesn't bother me ;)
As one politician told Tomasz Lis, "You'll soon be a refugee from Polish State Television!"
Nice to see that you're not even denying that PiS intend to seize control of TVP and turn it into PiSTV.