Nadezhda Krupskaya, born on this day in 1869, was a Bolshevik revolutionary, feminist, and librarian who helped develop the Soviet educational system. In 1926, she authored a memoir of her life and the life of her husband, Vladimir Lenin.

Image: A photo portrait of Nadezhda Krupskaya in the 1890s, unknown author [Wikipedia]

Robert F. Williams, born on this day in 1925, was a civil rights leader known for serving as president of the Monroe, North Carolina chapter of the NAACP and advocating for armed self-defense in his book "Negroes With Guns".

Image: Photo of Rob and Mabel Williams from the website for the PBS film "Negroes With Guns: Rob Williams and Black Power." [facingsouth.org]