In the first half of the 20th century, Uruguay was a relatively educated, democratic, and politically progressive South American country, and women there used old and new media for professional and political ends. Radical, Catholic, and liberal feminist women all utilized print media to promote their views and build support for their respective causes in publications aimed at both female and general audiences. Anarchist feminist María Collazo, for example, edited an important publication, La Batalla, from 1915 to approximately 1927. By the late 1920s, radio was an emerging mass medium, and women activists, journalists, and others sought to make their voices heard, literally and figuratively, on its airwaves. Starting in 1935, those airwaves included Radio Femenina, the first all-woman format radio station in the Western Hemisphere. One of the voices heard on Radio Femenina was Dra. Paulina Luisi, Uruguay’s leading feminist activist, who became a powerful voice of both the Socialist Party and the politics of the Popular Front in the late 1930s and early 1940s.