First up is Kanopy's African American History collection, a group of 14 films often about contemporary issues at the intersection of race, class, and culture. There are a number about history too: of particular interest is The Barber of Birmingham, a documentary about a barbershop owner who was a lifelong civil rights activist and held the American flag during the Selma march.
Docuseek2 also has a Black History Month playlist, which has a much stronger historical bent and focuses on undertold black history. The most exciting-sounding is Finally Got the News, a film about Detroit's League of Revolutionary Black Workers from the 1960s.
Both these sites supply AU with some terrific documentaries, and you owe it to yourself to watch at least one of their Black History Month selections. We're especially thankful that they turned their spotlight to parts of African-American history that are often overlooked.