Gerardo Murillo Coronado, also known by his signature "Dr. Atl", was a Mexican painter and writer. He was actively involved in the Mexican Revolution in the Constitutionalist faction led by Venustiano Carranza. He had ties to the anarchosyndicalist labor organization, the Casa del Obrero Mundial "House of the World Worker." Later in his life, he became a supporter of fascism and wrote pieces supporting the Axis powers in the buildup to the Second World War.

Guadalajara is a city in western Mexico and the capital of the state of Jalisco. According to the 2020 census, the city has a population of 1,385,629 people, making it the 7th most populous city in Mexico, while the Guadalajara metropolitan area has a population of 5,268,642 people, making it the third-largest metropolitan area in the country and the twentieth largest metropolitan area in the Americas. Guadalajara has the second-highest population density in Mexico, with over 10,361 people per square kilometer. Within Mexico, Guadalajara is a center of business, arts and culture, technology and tourism; as well as the economic center of the Bajío region. It usually ranks among the 100 most productive and globally competitive cities in the world. It is home to numerous landmarks, including Guadalajara Cathedral, the Teatro Degollado, the Templo Expiatorio, the UNESCO World Heritage site Hospicio Cabañas, and the San Juan de Dios Market—the largest indoor market in Latin America.