The Observer's 20 photographs of the week

The best photojournalism this week was again dominated by images of riots and demonstrations from around the world. Italian-born Marco Longari was in Istanbul covering the protests in Gezi Park. Here, Turkish police storm the park after protesters defied an ultimatum from Prime Minister Recep Tayyip Erdogan to end their occupation of the site Photograph: Marco Longari/AFP

And here, Longari photographs a protester reacting in pain to a salvo of teargas fired by the riot police in Gezi Park Photograph: Marco Longari/AFP

A man is treated for the effects of the teargas fired during the anti-government protests in Istanbul Photograph: Jodi Hilton/NurPhoto/Rex

Barack and Michelle Obama and their daughter Malia walk to Marine One as they depart the White House for Northern Ireland to take part in the G8 Summit Photograph: Getty

And here is the obligatory group shot of the G8 leaders at Lough Erne, near Enniskillen, in Northern Ireland. At least Suzanne Plunkett made the photograph more interesting by shooting with a wide angle lens to include the dark clouds hanging above the relatively small figures Photograph: Suzanne Plunkett/Reuters

Andean people protest against Newmont Mining's Conga project in Cajamarca, Peru. Thousands of opponents of the $5bn gold project of Newmont Mining circled a lake high in the Andes, vowing to stop the company from eventually draining it to make way for Peru's most expensive mine Photograph: Enrique Castro-Mendivil/Reuters

A sand storm envelops camels in the desert region of al-Hasa, Saudi Arabia Photograph: Fayez Nureldine/AFP

Firefighters spray water on burning palm oil trees in Indonesia's Riau province. The fires have been caused by illegal land clearances and have resulted in record levels of air pollution in neighbouring countries Singapore and Malaysia Photograph: Beawiharta/Reuters

Unseasonal storms caused havoc across France. Laurent Dard's aerial viewpoint graphically depicts the damage resulting from the flooded Lanne river in Villelongue Photograph: Laurent Dard/AFP

On World Refugee Day, Angelina Jolie travelled to Jordan in her role as special envoy for the United Nations High Commission for Refugees. Here, in Amman, she visits a family of Syrian refugees Photograph: Olivier Laban-Mattei/AFP/Getty

At a news conference in Jordan, Angelina Jolie urged world leaders to end the conflict. Here, in Aleppo, a member of the Free Syrian Army sits with his weapon inside a damaged house Photograph: Muzaffar Salman/Reuters

Francois Mori took this striking overhead image of planes at Le Bourget airport during the Paris Air Show Photograph: Francois Mori/AP

A close-up view of a sedated elephant's eye is seen as it is secured on the back of a truck by the Kenya Wildlife Service. Ten elephants were being relocated to a national park after encroaching on community land in the Ol Pejeta Conservancy Photograph: Reuters

Locals watch as another sedated elephant is placed on a truck by the Kenya Wildlife Service wardens Photograph: Reuters

Waste towers over residents in Manila. The city has just banned disposable plastic shopping bags to curb the tide of rubbish in the city, which exacerbates its flooding problem Photograph: Noel Celis/AFP

Commuters ride on a subway train at Yonggwang station, 'glory station', in Pyongyang, North Korea. Foreign visitors are usually allowed to take only one stop from Puhung to Yonggwang Photograph: Alexander F Yuan/AP

Young Palestinians take part in a military exercise during a graduation ceremony organised by Hamas in Rafah Photograph: Suhaib Salem/Reuters

In Rio de Janeiro, demonstrators took to the streets initially to protest against the cost of bus fares
Photograph: Agencia Estado/Rex

The demonstrations escalated into mass protests against corruption and price increases. In Yasuyoshi Chiba's photograph from Recife, a demonstrator stands next to a homeless woman with a placard which reads 'we want a cure for hunger' Photograph: Yasuyoshi Chiba/AFP

Here, a demonstrator is shot by rubber bullets in Rio after clashes erupted during the protest which is now being called the 'Tropical Spring' Photograph: Christophe Simon/AFP