David Alfaro Siqueiros was a Mexican muralist who designed the Polyforum Cultural Siqueiros and was a member of what political party?
Polyforum Cultural Siqueiros: The Polyforum Cultural Siqueiros is a cultural, political and social facility located in Mexico City as part of the World Trade Center Mexico City. Polyforum Cultural Siqueiros:  It was designed and decorated by David Alfaro Siqueiros in the 1960s and hosts the largest mural work in the world called “La Marcha de la Humanidad.” David Alfaro Siqueiros:  He was a Marxist-Leninist in support of the Soviet Union and a member of the Mexican Communist Party who participated in an unsuccessful attempt to assassinate Leon Trotsky in May 1940.
Mexican Communist Party