A man distributes newspapers in Warsaw, Poland, on May 11, 2015. Jaroslaw Kaczyński, leader of Poland's PiS party, recently filed a criminal libel complaint against two Gazeta Wyborcz journalists. (Kacper Pempel/Reuters)
A man distributes newspapers in Warsaw, Poland, on May 11, 2015. Jaroslaw Kaczyński, leader of Poland's PiS party, recently filed a criminal libel complaint against two Gazeta Wyborcz journalists. (Kacper Pempel/Reuters)

Polish ruling party president files criminal libel complaint against independent daily