The charro tradition was strong in Jalisco, especially in a region called Los Altos. After the Revolution, the charreada became a national sport in Mexico and rings were constructed specifically for them, followed by professional charro associations. With the breakup of the large "haciendas", charros were no longer economically necessary but were used as a cultural ideal, especially by the film industry in the mid-20th century. The first charro movies date from the 1920s, but the first to sing mariachi was Tito Guízar in "Allá en el Rancho Grande" in 1936. The character was played by Jorge Negrete in films such as "¡Ay, Jalisco... no te rajes!" and "¡Así se quiere en Jalisco!" The main characters used his ability to sing mariachi as a way to show strength, virility, and aesthetic beauty. Its use in film also made the music popular and a symbol of ethnic pride for Mexican Americans in the United States.