He later worked as an assistant to Diego Rivera for the mural done at the Insurgentes Theater, as well as the Olympic Stadium at the Ciudad Universitaria .
[1][3][4] He was a lifelong militant communist, involved in activities mostly through the Taller de Gráfica Popular, for example printing posters during the student uprising in 1968.
Those in the last collection were donated by the artist during the Pascual Boing workers 1982 strike which eventually led to the employees taking over the company.
[3] His first solo mural was done in 1950 related to the Popol Vuh in the dining room of the Hotel Maya-Land at Chichen Itza .
[3][4] His last mural was “La comunicación postal” at the Vicente Guerrero Library in Mexico City, which measures eighty m2.
This led to repression of the group, but they were able to reopen in 1969, with the organization including writers and artists such as Jaime Sabines, Rubén Salazar Mallén, Efraín Huerta, Thelma Nava, Roberto López Moreno, Xorge del Campo, Dionicio Morales, Gerardo de la Torre, René Avilés Fabila and Manuel Blanco.
[1] He was one of the last muralists in the tradition of David Alfaro Siqueiros and Diego Rivera, promoting Mexican muralism throughout his life, even after it had fallen out of favor.