Pod Prąd ('Against the current') was a Polish weekly Marxist newspaper published between 1934 and 1936, issued by dissidents from the Communist Party of Poland that turned against the Soviet Union. The newspaper was founded by Andzrej Stawar. The other main figure in the Pod Prąd venture was Roman Jabłonowski. The newspaper was sold openly in the 1930s and wasn't confiscated.
Even though Pod Prad operated on the margins of the Communist Party, the publication had a profound influence over the intellectuals of the party.
References
Pod Prąd Wikipedia(Text) CC BY-SA