South African authorities have deployed police units to towns and cities across the nation in anticipation of planned demonstrations targeting undocumented foreign nationals. Security personnel were observed patrolling Johannesburg's central business district, leading many shopkeepers to close their businesses on Tuesday. Reports also indicated the presence of South African National Defence Force assets.

The protests have been organized by anti-migration vigilante groups, including one named March and March, which had set an unofficial deadline of June 30 for undocumented foreigners to leave the country. Organizers have stated their focus is on undocumented migrants and that demonstrations will be peaceful, though foreigners with proper documentation have also reported experiencing harassment.

Jacinta Ngobese-Zuma, a leader of March and March, emphasized that the group is not advocating for violence and stated that no killings or looting would occur in their name on June 30. This precautionary deployment by police is intended to prevent a recurrence of mass looting and mob violence, reminiscent of the 2008 anti-migrant riots that resulted in 62 fatalities.

The current situation echoes the unrest seen in July 2021, which became the deadliest period in South Africa since the end of apartheid, claiming over 350 lives following the imprisonment of former president Jacob Zuma. In the weeks leading up to the scheduled protests, groups of men were seen moving through Johannesburg and Durban, interrogating and, in some instances, assaulting migrants. These individuals were reportedly chanting "abahambe," an isiZulu and isiXhosa phrase meaning "they must leave."

Mozambican nationals have been among those targeted, with five reported killed according to a statement from South Africa's northeastern neighbor. Foreign-born migrants constitute an estimated 4% of South Africa's total population of 62 million people, highlighting their significant, albeit minority, presence within the country.

The vigilante groups' actions have raised concerns among various stakeholders, including human rights organizations and neighboring countries. The government's decision to deploy security forces underscores the potential for escalated tensions and the need to maintain public order.

While organizers claim peaceful intentions, the history of xenophobic violence in South Africa, particularly the 2008 riots and the 2021 unrest, casts a shadow over the upcoming demonstrations. The effectiveness of the police deployment in preventing both targeted harassment and wider public disorder remains a critical question.

Further analysis will focus on the specific demands of the vigilante groups, the broader socio-economic factors contributing to anti-immigrant sentiment, and the long-term strategies South Africa might implement to address these complex issues.