in 1924 the organization's name was changed to jeunesse ouvrière chrétienne (joc, or "young christian workers"). the organization grew at a rapid pace throughout the world; its members were often known as "jocists" (the movement was often called "jocism"). in 1938 there were 500,000 members throughout europe; in 1967 this had increased to two million members in 69 different countries. his opponents often called him a communist or a pied piper. in january 1938 he sent a petition to the pope asking for him to initiate the causes of canonization for margaret sinclair and pier giorgio frassati.