Protests erupt in Brazil after black man dies after being beaten outside supermarket

Joao Alberto Silveira Freitas was allegedly attacked by security guards at a Carrefour store in Porto Alegre

A black man who died after being beaten by supermarket security guards in the city of Porto Alegre on the eve of Black Consciousness Day has sparked outrage across Brazil after videos of the incident circulated on social media.

Footage showed Joao Alberto Silveira Freitas being punched in the face just outside the doors of a Carrefour supermarket, late on Thursday. Other clips showed Freitas' being kneeled on.