Late in 1947, he stowed away to France, where he worked at a Citroën factory in Paris and then on the docks at Marseille, becoming active in the French trade union movement. He joined the communist-led CGT and the Communist party, helping lead a strike to hinder the shipment of weapons for the French colonial war in Vietnam. During this time, he discovered the Harlem Renaissance writer Claude McKay and the Haitian Marxist writer Jacques Roumain.