 The strength of apartheid at this time was founded upon a political culture of white supremacy, in particular by those of the Conservative Party and National Party, and was adopted by the South African government as formal policy in 1948.In 1950 the Population Registration Act provided a framework of segregation by formally categorising South African citizens by various racial classes.During this time anti-apartheid political groups such as the Afrapix and ANC became heavily organised and employed both passive and aggressive methods to challenge the longevity of apartheid.