Like many forms of popular music, tango was associated with the underclass, and attempts were made to restrict its influence. In spite of the scorn, some, like writer Ricardo Güiraldes, were fans. Güiraldes played a part in the international popularization of tango, which had conquered the world by the end of World War I; he wrote the poem "Tango", which describes the music as the "all-absorbing love of a tyrant, jealously guarding his dominion, over women who have surrendered submissively, like obedient beasts".