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: Carry-on Bags
28:38

Gustave Flaubert and the ‘Madame Bovary’ Trial
45:15

Elizabeth Bisland, Beyond the Trip Around the World
42:54