New Delhi, July 2 -- Siphesihle Mncemeleni had spent most of June 30 indoors at the instruction of family who feared what was gathering outside. Late that night, as anti-immigrant marchers dispersed from the streets of Alexandra, northeast Johannesburg, the 21-year-old stepped out. He did not come back. A bullet killed him before morning, and Johannesburg police opened a murder investigation in a township where similar cases rarely reach court.

including a Malawian man and multiple Mozambican nationals - have been killed since the movement known as "March and March" organized its June 30 deadline for undocumented migrants to leave the country or face consequences. Mozambique's government said seven of its citizens had died, with five dea...