Final answer:
The quote best describes the feelings that began the Anti-Apartheid Movement, a response against systemic oppression in South Africa, correlating with the themes of equality and justice.
Step-by-step explanation:
The quote in question could best describe the feelings that began the Anti-Apartheid Movement decades later. This movement was a political, economic, and social reaction against the system of Apartheid in South Africa, wherein the non-white majority was oppressed by the white minority government. It shares the themes of resistance and the struggle for equality and justice seen in other movements such as the Mau Mau Rebellion and broader decolonization efforts.
In contrast, the Mau Mau Rebellion was a specific anti-colonial struggle in Kenya during the 1950s. The Pan-African Movement was more of a broader cultural and political initiative to unite all people of African descent and foster solidarity. The Anti-Slavery Movement was aimed at ending slavery and the slave trade, which predates the issue addressed in the quote. Considering the context of challenging systemic oppression and seeking international cooperation, the Anti-Apartheid Movement is the best fit for the quote.