From the MoMA website, i found the following information on Mexican Muralist and Artist David Alfaro Siqueiros and his influence on Jackson Pollock’s work.
Siqueiros, one of the Mexican mural painters of the 1920s and 1930s, advocated what he called “a monumental, heroic, and public art.” An activist and propagandist for social reform, he was politically minded even in his choices of materials and formats: rejecting what he called “bourgeois easel art,” he used commercial and industrial paints and methods.
Siqueiros was passionately committed to technical innovation. He believed that revolutionary art called for revolutionary techniques and materials and considered the paintbrush “an implement of hair and wood in an age of steel.” Collective Suicide offers a compendium of the radical techniques the artist explored as part of the Siqueiros Experimental Workshop he founded in New York in 1936. He airbrushed paint across the top third of the panel of his painting Collective Suicide and used stencils to depict the vast army of invading seventeenth-century Spanish conquistadors on horseback (lower right) and Chichimec Indians leaping to their deaths to avoid subjugation (left). The swirling vortexes are pools of fast-drying commercial lacquer typically used on cars.
A member of the workshop later recalled that they applied this paint “in thin glazes or built it up into thick gobs. We poured it, dripped it, splattered it, and hurled it at the picture surface.” Siqueiros’s radical experiments proved influential for Abstract Expressionist artist Jackson Pollock, in particular, who was a member of the Workshop.
If you’re interested in a movie about David Alfaro Siqueiros I highly recommend EL Mural on YouTube
In the featured photograph: Siqueiros and Members of his Experimental Workshop in New York City, c. 1935. Photograph © Archivo CENIDIAP-INBA