TL;DR: In a plot to destabilize the EU, Putin and Lukashenko personally and directly caused masses of people to migrate from the Middle East, Asia, and Africa, so Poland won't observe the legal right of asylum anymore. They also decriminalised shooting migrants "in self defence".
(Edit) This is from the new, supposedly less fascist Polish govt lol
It is and it always was. 1956, 1968, 1980, all were test runs before the western destabilisation efforts aimed at other places in East Europe.