Scores of anti-illegal immigration protesters marched through Sunnyside in Pretoria on Monday, with many businesses closing their doors as demonstrators demanded that undocumented foreign nationals leave South Africa.

As tensions escalate in Soweto, residents demand the expulsion of undocumented migrants. What does this mean for South Africa's immigration policies?

Protesters have told all undocumented foreigners to leave South Africa by Tuesday, ahead of anti-immigrant rallies that many fear will turn violent.