Lotta Continua
Harlan abruptly ended his research in the Polish archives in 1964. A planned book with Feltrinelli about German war criminals never materialized. He became "a rare species of man: an international German revolutionary" (eine seltene Spezies Mensch: ein internationaler deutscher Revolutionär). After his father died, he moved to Italy. He joined the far-left organization Lotta Continua and began literary work, which along with his travels and films, marked the following years.