If there are two words that describe public appreciation of William Greaves, they would be “belated” and “lacking.” The film Greaves is best known for, 1971’s Symbiopsychotaxiplasm, didn’t see an official theatrical release until thirty years after its completion (thanks in part to the support of Steve Buscemi and Steven Soderbergh). When Greaves passed away last month at the age of 87, he left behind an amazing body of work, having produced and directed dozens of documentaries. Yet even amongst this country’s underrepresented class of African American filmmakers, Greaves’ contributions remain overlooked. It is no exaggeration to say that media gatekeepers have been wary of Greaves’ work. Greaves decided at an early age not to be relegated by Hollywood’s single-minded understanding of blackness and the lack of creative opportunities it permits for persons of color. Greaves used these limitations as the lifeblood of his work, challenging political, institutional, and aesthetic boundaries. One look at Symbiopsychotaxiplasm explains, but does not justify, its delayed release: this is the work of his filmmaker ahead of his time, and one with no patience for conventional approaches to filmmaking. So here is a bit of free film school (for fans and filmmakers alike) from an essential American filmmaker.