José de Jesús Alfaro Siqueiros (Santa Rosalía de Camargo, Chihuahua, 1896 - Cuernavaca, Morelos, 1974) was a prominent mexican muralist. After briefly attending the Escuela Nacional Preparatoria (National Preparatory School), he began his artistic training in 1913 at the Escuela de Pintura al Aire Libre (Outdoor Painting School) in Santa Anita. Siqueiros actively participated in the Mexican Revolution, joining the Constitutional Army in 1917, and later traveled to Europe as a military attaché. After returning to Mexico in 1921, he championed monumental public art and the values of indigenous culture. 

In 1922, Siqueiros began mural work at the Escuela Nacional Preparatoria, and joined the Mexican Communist Party. While in Los Angeles, he founded The Bloc of Mural Painters and created works like Mitin obrero and América tropical, mastering airbrush techniques on concrete. His political views led to multiple imprisonments, including his involvement in the 1940 assassination attempt on Leon Trotsky.

At age 64, Siqueiros was sentenced to eight years in prison for organizing leftist student riots. Known for his murals’ dynamism, vibrant light and color, and didactic elements that combined painting, sculpture, and architecture, Siqueiros remains a celebrated figure in Mexican art.