African National Congress
The government of the newly formed Union of South Africa began a systematic oppression of black people in South Africa. The Natives' Land Act was issued in 1913. The effect of these laws was to force many non-whites from their farms into the cities and towns to work, and to restrict their movement within South Africa. By 1919, the ANC led a campaign against passes, and in 1929 the ANC supported a militant mineworkers' strike.