David Siqueiros, a politically active Mexican muralist, was often jailed for his communist sympathies. Which of his works depicted a baby to symbolize the innocent victims of the Revolution?

The "Echo of a Scream" is a work of David Siqueiros that depicted a baby to symbolize the innocent victims of the revolution. David Siqueiros is a politically active Mexican muralist who is jailed because of his sympathies to the Communists.