Piotr Gontarczyk studied journalism and political science at Warsaw University, in 2003 receiving a doctorate for his thesis, The Polish Workers' Party: The Road to Power, 1942-1945. In 2004 the thesis was honored with a :pl:Nagroda im. Jerzego Łojka|Jerzy Łojek Award. Gontarczyk has also studied at the Warsaw University Institute of History. In 1998–2005 he worked in the office of the Commissioner for the Public Interest with its deputy commissioner, Judge Krzysztof Kauba. Since 2006 he is vice-director of the Office of Archivization of Documents at the Institute of National Remembrance. In September 2007 he was named Deputy Director of the Lustration Office at the Institute of National Remembrance. In 2006 Gontarczyk identified Zygmunt Bauman as a former agent, in 1945–53, of the Polish Security Service. Gontarczyk is a former member of the academic corporation, Respublica. In 2012 he criticized the Polish Foreign Ministry's recommendation of a book—Inferno of Choices: Poles and the Holocaust, about Polish antisemitism—as an act of incompetence which may tarnish Poland's reputation. He has published articles in such scholarly publications as Zeszyty Historyczne,, Glaukopis, Dzieje Najnowsze, Zeszyty Historyczne WiN, Biuletyn Kwartalny Radomskiego Towarzystwa Naukowego, Biuletyn Instytutu Pamięci Narodowej, and Aparat Represji w Polsce Ludowej 1944–1989. He has also been published in many newspapers such as Życie, Rzeczpospolita, Gazeta Polska, Nasz Dziennik, Polityka, Gazeta Wyborcza, Uważam Rze, Do Rzeczy, Więź, Najwyższy Czas!, Tygodnik Solidarność,, Wprost, and Życie Warszawy.
In 2000, Gontarczyk published a book about the Przytyk pogrom: Pogrom? Zajścia polsko-żydowskie w Przytyku 9 marca 1936 r. Mity, fakty, dokumenty. Jerzy Tomaszewski, praises Gontarczyk for efforts aiming at describing in details the events, and his critical approach to press reports, but criticizes him on restricting sourcing to almost exclusively on Polish legal and administrative documentation, seeing Polish, Jewish and American publications as being based almost exclusively on the prewar Jewish press and on books published in the communist period. According to Tomaszewski, this rejection was irrational and wrong, narrowing the scope of information on the subject.
Jedwabne Pogrom
In 2001, Gontarczyk wrote that the earlier involvement of some Jews in communist atrocities during the World War IISoviet occupation of Poland cannot excuse the 10July 1941Jedwabne pogrom, even if that involvement contributed to anti-Jewish violence. Gontarczyk criticized historian Jan T. Gross' 2001 book, , describing the Jedwabne pogrom. Gontarczyk criticized Gross for giving different weight to witness statements based on the witnesses' ethnicities, for showing a lack of objectivity, and for treating witness statements as reliable solely on the basis of whether the witness had been at risk of becoming a Holocaust victim. According to Gontarczyk, this approach contravenes established procedure in history studies, where every statement should be judged objectively. He also pointed out that Gross ignored the relations that existed between Poland's Jewish and Polish populations under Soviet occupation. Gontarczyk placed responsibility for the Jedwabne pogrom at the doorstep of two criminal ideologies, Nazism and communism, and supported the exhumation of the Jewish victims' bodies, which was opposed by many Jews on religious grounds.
Wałęsa controversy
In 2008, Gontarczyk and Sławomir Cenckiewicz published a book, SB a Lech Wałęsa. Przyczynek do biografii. While the book seemed more like a political indictment than a work of scholarship, it caused a major controversy in Poland. Gontarczyk and Cenckiewicz argued that in the 1970s the Solidarity leader and later President of Poland Lech Wałęsa was a secret informant of the Polish communist Security Service. Michael Szporer wrote that the book should have been more nuanced in its judgments of anticommunist leaders, and that it unfairly singled out Wałęsa.Professor Wlodzimierz Suleja named Gontaryczk's book as one of the most important biographies in recent historiography in Poland
Personal life
Gontarczyk is married to Aneta Gontarczyk. In 2009 Ms. Gontarczyk, who had worked for the :pl:Wojskowe Służby Informacyjne#Komisja Weryfikacyjna|Military Intelligence Services verification commission, had her security clearance revoked. According to Piotr Gontarczyk, this was political retribution by Donald Tusk's administration for Gontarczyk's book about Lech Wałęsa.
Books
Tajne oblicze GL-AL, PPR. Dokumenty - co-author
Pogrom? Zajścia polsko-żydowskie w Przytyku 9 marca 1936 r. Mity, fakty, dokumenty,
Polska Partia Robotnicza. Droga do władzy 1941-1944,
Tajny współpracownik "Święty"
Kłopoty z historią
SB a Lech Wałęsa. Przyczynek do biografii
Najnowsze kłopoty z historią. Publicystyka z lat 2008-2012