South African nationals shout slogans during a protest march against illegal immigrants on February 24, 2017 in Pretoria. South African police fired rubber bullets, tear gas and stun grenades to break up violent clashes between local protesters and migrants in Pretoria on February 24, 2017 at an anti-immigration march. Attacks against foreigners in the country have erupted regularly in recent years, fuelled by high unemployment and dire poverty. / AFP / Phill Magakoe (Photo credit should read PHILL MAGAKOE/AFP/Getty Images)

South African nationals shout slogans during a protest march against illegal immigrants on February 24, 2017 in Pretoria.
South African police fired rubber bullets, tear gas and stun grenades to break up violent clashes between local protesters and migrants in Pretoria on February 24, 2017 at an anti-immigration march. Attacks against foreigners in the country have erupted regularly in recent years, fuelled by high unemployment and dire poverty. / AFP / Phill Magakoe        (Photo credit should read PHILL MAGAKOE/AFP/Getty Images)