The Ukrainians have followed the example of the 1921 constitution with their decorum in their in their parliamentary debates.
Except the Verkhovna Rada - "Supreme Council" or "Supreme Soviet" (although the latter translation is never used nowadays) doesn't trace back to the 1921 Polish Constitution, but rather earlier political systems that weren't part of Poland. If you want the direct linage, then it comes from the 1917 All-Ukrainian Congress of Soviets, which wasn't connected to Poland except in the struggle for territory. Obviously, you've got some severe issues with understanding the evolution of nation states.
And Kwaśniewski was a communist, but he kept the Trybunał Konstytucyjny which came from Jaruzelski's government in 1982.
It might have come to Poland then, but the concept of a Constitutional Tribunal comes from the French and German legal traditions.
Until he transfers his powers to someone else, or that constitution is restored in Poland, Wałęsa remains the president of the Second Polish Republic.
You really don't get it, do you?
That was a symbolic act - it had no legal force whatsoever. Wałęsa was elected under the rules of the 1989 amendments and his Presidency operated under those rules until the 1992 Small Constitution was introduced. That's why there were constant problems during his Presidency, because the Presidency itself was rather ill-defined, unlike the 1935 Constitution.
PO de facto discriminated against ethnic Poles in favor of newly settled foreigners
PO didn't discriminate against anyone. The requirements for the recognition of Polish citzienship didn't change much between the 1962 and 2013 laws, except the latter made it more straightforward as there's no provision for the loss of Polish citizenship.
don't rely on Wikipedia for your research
Yes, relying on Wikipedia and the English language media for his legal "knowledge" obviously isn't very helpful.
Update on demonstrations planned for Saturday 12th DecemberSince my first message, there have been new demonstrations planned in other Polish cities. All demonstrations are at 12.00 on 12/12/15.
Lublin - Plac Litewski 1
Wrocław - Plac Solny
Bielsko-Biała - Plac Chrobrego
Szczecin - Plac Grunwaldzki
Numbers are growing - and like I said before, I urge every foreigner that cares about this country to try and attend one of the demonstrations if they can. This isn't about being "anti-government", it's about defending our democracy and Constitution from the hands of people that want to destroy it.