This happened at Maponya mall in Soweto, a township southwest of Johannesburg in South Africa. Two guys shot and killed two security guards for their firearms.
The guards were sitting in their vehicle. The murder, including the faces of the killers, were caught on the vehicle’s interior dashcam camera. It looks like the guards wore bulletproof vests, but those provided no protection against ambush headshots from behind.
Props to Best Gore member @frankthecompletewank for the video: