Rhythmus 21 (1921) | MoMA FILM VAULT SUMMER CAMP
Why the open web links it
An early example of abstract cinema by Hans Richter, showcasing geometric shapes in rhythmic motion.
Linked by 8 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including cuny.edu, unipd.it, fiafnet.org, avanca.org, icakyoto.art.
Cited in 1 Wikipedia article, including Rhythmus 21.