Agnès Varda was a Belgian-born French film director.
Her films were popular among critics and directors, giving her the status of a cult director.
This is perhaps not the best of times to rid the world of a minor misconception regarding the work of Varda, but it is what I must do after researching her oeuvre following her death.
Agnès Varda made one film about the Black Panther Party, just one. That film was Black Panthers (1968), a color film which can be viewed in its entirety at Archive.org[1].
Another film from that same year is called Huey! and is directed by a certain Sally Pugh. It can be seen in full on YouTube [below] and has nothing to do with Varda, although the general subject matter as well as some scenes overlap.