Refugee Convention on July 28, South Africa is grappling painfully with familiar questions about migration and belonging. But to Ms. Selale and her fellow protesters, the family was emblematic of what they believe is a migration crisis in South Africa. “This is our land, our country,” Ms. Selale explains. Pushed on social media and by political groups, that kind of rhetoric is fueling a wave of anti-immigration marches and attacks throughout South Africa. “We were raised to believe that when Nelson Mandela becomes president, we will be free,” recalls Ms. Selale, now in her mid-40s.