Born in 1927 in the Northern Cape, Morolong participated in ANC campaigns in the Cape Town area and was a member of the South African Congress of Trade Unions. A defendant in the Treason Trial from December 1956 until December 1957, he was detained in solitary confinement for several months during the 1960 state of emergency. In 1963 he was banned and restricted to his father's kraal in an isolated area of the Northern Cape, where he was forced to remain.