Marek J. Chodakiewicz , Piotr Gontarczyk and Leszek Zebrowski in their book '' Tajne oblicze GL-AL , PPR : Dokumenty '' criticized Madajczyk , writing that he had been " at the Communist party 's disposal " in reference to his description of relations of Polish Workers Party ( PPR ) and Comintern during World War II . Polish-American historian Anna Cienciala , in a review of this work , commented : " '' Of course , these Madajczyk 's statements camouflage the realities of the PPR-Comintern relationship , but they may have been the price agreed with the censor for publishing the documents in the first place . '' " Cienciala further says that with the liberalization of Poland and the fall of communism , in 1989 Madajczyk wrote an extensive work on Soviet massacre of Polish POWs in Katyn . Hirschfeld noted that during the Cold War , Madajczyk was a vocal supporter of scholarly cooperation , breaching the Iron Curtain
massacre
Katyn massacre
Czesław Madajczyk