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:

Hercules Posey & the President’s House
45:15

SYMHC Classics: Pueblo Revolt
24:21

Behind the Scenes Minis: Coffee, 'Pirats' and Sea Robbers
30:36