What evidence do the authors include to support the central idea of this passage? The burning of certificates and the repeal of the Black Act show that the Indians reclaimed their power. The Black Act shows that the South African government saw the Indians as property. The burning of certificates and the act of Satyagraha show how the Indians had to comply with the Black Act. The presence of 2,300 Indians shows that the community in South Africa was large enough to revolt.