This 1956 march was a protest against pass laws that were part of South Africa’s system of apartheid – and specifically the requirement that women carry passes. The protest was simultaneously part of the anti-apartheid movement in South Africa, and the movement for women’s rights.
Research:

Behind the Scenes Minis: Busses and Overpasses
22:32

Robert Moses and the Shaping of New York, Part 2
42:12

Robert Moses and the Shaping of New York, Part 1
41:59