Under the pseudonym of "Mustafa Ibn Jala" he wrote for the Communist newspaper Mundo Obrero, urging Moroccans to desert the fascist army. Most of his activity however consisted of making radio broadcasts, writing pamphlets in Arabic, and haranguing Moroccan troops in their trenches by means of a megaphone.[22] His proposal that an anti-colonial revolution be stirred up in the Moroccan Rif in order to deprive the fascists of cannon fodder met with resolute opposition from Dolores Ibárruri, La Pasionaria of the Spanish Communist Party, who is said to have opposed any alliance with what she called 'hordes of Moors, beastly savages (morisma salvaje) drunk with sensuality who rape our women and daughters.'[24][25] Frustrated by the few Moroccans who were convinced, and experiencing the party's hostility to them, he left Spain in December 1936.[26]