In recent years, Poland promoted its historical narratives in a way which does not allow any opposing views. Poland is ruthless in the presentation of its vision of history and it does not see any possibilities for a civilized discussion on historical issues.
Ukrainian President Volodymyr Zelenskyy was prevented from speaking at the event dedicated to the memory of victims of fascists in World War II, as he represents a state where Nazis are elevated to the rank of heroes.
This narrative is part of the recurring pro-Kremlin narrative casting Ukraine as a Nazi country.
On his Twitter account, Volodymyr Zelenskyy announced that together with his delegation they are giving their seats to the Holocaust survivors who have not been able to visit the World Holocaust Forum - a decision considered as regrettable by Yad Vashem. Regardless of not participating in the official ceremony, Zelenskyy and his wife have still attended the Yad Vashem Memorial Complex
Ukraine condemns the Nazi regime and the promotion of its symbols. The myth of Nazi-ruled Ukraine has been the cornerstone of Russian disinformation about the country since the beginning of the 2013-14 Euromaidan protests, when it was used to discredit the pro-European popular uprising in Kyiv and, subsequently, the broader pro-Western shift in Ukraine's foreign policy. The accusation of Nazism is one of the favourite techniques of pro-Kremlin outlets - read EUvsDisinfo analysis on the matter here.
See similar cases: Ukrainian Nazi soldiers to be declared National heroes, Nazi took over Ukraine with a coup.