Tensions between immigrants and South Africans operating under the banner of the Dudula Movement in Alexandra, Johannesburg, continue to simmer, exacerbated by the poverty shared by many on both sides of the stand-off. News24 reports that heavily armed police officers and nyalas weaved through the streets on Tuesday, the thin blue line between warring factions. Meanwhile, five people have been arrested and charged with public violence, while another has been charged with possession of a fake gun.