Question: David Alfaro Siqueiros was a Mexican muralist who designed the Polyforum Cultural Siqueiros and was a member of what political party?
Sentence (from "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.
Relevant evidence: Yes