As the postwar period progressed, Abe's stance as an intellectual pacifist led to his joining the Japanese Communist Party, with which he worked to organize laborers in poor parts of Tokyo. Soon after receiving the Akutagawa Prize in 1951, Abe began to feel the constraints of the Communist Party's rules and regulations alongside doubts about what meaningful artistic works could be created in the genre of "socialist realism." By 1956, Abe began writing in solidarity with the Polish workers who were protesting against their Communist government, drawing the Communist Party's ire. The criticism reaffirmed his stance: "The Communist Party put pressure on me to change the content of the article and apologize. But I refused. I said I would never change my opinion on the matter. This was my first break with the Party." The next year, Abe traveled to Eastern Europe for the 20th Convention of the Soviet Communist Party. He saw little of interest there, but the arts gave him some solace. He visited Kafka's house in Prague, read Rilke and Karel Čapek, reflected on his idol Lu Xun, and was moved by a Mayakovsky play in Brno.