Brazilian oilfield auction protests – in pictures

A demonstrator in front of the hotel in Barra de Tijuca, Rio de Janeiro, Brazil, where the country's National Petroleum Agency (ANP) auctioned drilling rights to Libre, one of the world's largest offshore oil discoveries Photograph: Christophe Simon/AFP/Getty Images

People continue to sunbathe as riot police line a beach near the Libre oilfield auction Photograph: Christophe Simon/AFP/Getty Images

Protesters confront guards at the Libre oilfield auction Photograph: Christophe Simon/AFP/Getty Images

Demonstrators against the oil auction behind barricades in Rio Photograph: Christophe Simon/AFP/Getty Images

Soldier used rubber bullets and teargas against protesters during the Libre auction Photograph: Sergio Moraes/Reuters

A protester leaps through teargas Photograph: Mario Tama/Getty Images

Protesters behind shields outside the Libre auction Photograph: Christophe Simon/AFP/Getty Images

Masked protesters near the Libre oilfield auction in Rio de Janeiro Photograph: Mario Tama/Getty Images

A protester throws back a teargas canister Photograph: Mario Tama/Getty Images

Security forces advance on activists in Barra de Tijuca, Rio de Janeiro Photograph: Christophe Simon/AFP/Getty Images

People run away from teargas as demonstrators clashed with Brazilian security forces outside the Libre oil auction
Photograph: Marcio Isensee e S /Demotix/Corbis