The Observer's 20 photographs of the week

Beyoncé performs on stage at the Chime For Change concert at Twickenham Stadium. Chime For Change is a global campaign for girls' and women's empowerment Photograph: Tullio Puglia/Chime For Change/Getty

Photographer Gene Blevins has featured in this gallery recently with his dramatic images from the tornadoes in Oklahoma. Here he covers another natural disaster as firefighters battle the Powerhouse wildfire at the Angeles National Forest. The Powerhouse fire has ravaged more than 5,600 acres of the forest Photograph: Gene Blevins/Reuters

The following day the desolate scene at the Angeles National Forest is captured in this frame by Reed Saxon. Erratic winds fanned the fire to nearly 41 sq miles after fast-moving flames triggered the evacuation of nearly 1,000 homes Photograph: Reed Saxon/AP

The demonstrations against the ruling party, police brutality and the destruction of a park continued in Turkey and photographer Aris Messinis was in Istanbul producing some excellent photojournalism. Here demonstrators wave Turkish flags during a protest at Gazi park next to Taksim Square Photograph: Aris Messinis/AFPt

And here demonstrators clash with riot police during the protest against the demolition of the park. What started as an outcry against a local development project in the park has snowballed into widespread anger against what critics say is the government's increasingly conservative and authoritarian agenda Photograph: Aris Messinis/AFP

Oscar Pistorius returned to Pretoria magistrates court in his first formal appearance since his release on bail in February for the Valentine's Day killing of his girlfriend, model Reeva Steenkamp. Here he talks to his sister Aimee while holding her hand ahead of the court proceedings Photograph: Siphiwe Sibeko/Reuters

Hombres de Musgo, Moss Men, take part in the Corpus Christi procession in Bejar, Spain. The tradition, dating back to 1397, originates from a legend about Christians reconquering the town by entering under cover of darkness covered in moss to camouflage themselves from the Muslim guards Photograph: Pablo Blazquez Dominguez/Getty

Remaining in Spain, new Barcelona signing Neymar is surrounded by children during his official presentation. Barcelona paid Brazilian side Santos £48.6m for him Photograph: David Ramos/Getty

People gather at Victoria Park in Hong Kong for a candlelight vigil to mark the anniversary of the brutal 1989 crackdown at Tiananmen Square. Hong Kong is the only place in China where the anniversary is openly commemorated Photograph: Philippe Lopez/AFP

Surfers and bodyboarders take advantage of near perfect surfing conditions at Snapper Rocks on the Gold Coast in Australia. Photograph: Newspix/Rex

Summer houses are flooded by water from the river Danube near the village of Deggendorf in southern Germany. The country suffered its worst floods in more than a decade which claimed 12 lives and forced mass evacuations across central Europe Photograph: Christof Stache/AFP

The floods also hit Cesky Krumlov in the Czech Republic Photograph: Barcroft Media

In Kiev, a member of the women's rights group Femen runs away from policemen trying to arrest after she had shouted 'Vladimir I love you!' and impersonated Russian gymnast Alina Kabayeva. Russian President Vladimir Putin and his wife Lyudmila announced their divorce after three decades of marriage this week. The Moskovsky Korrespondent newspaper reported in 2008 that Putin was about to marry Kabayeva, the Olympic gymnast turned legislator Photograph: Sergei Supinsky/AFP

US actress Angelina Jolie poses for photos with fans as she arrives for the German premiere of the film World War Z in Berlin. The apocalyptic horror film based on the novel by Max Brooks is about a United Nations employee who travels around the world to save the planet from zombies Photograph: Hannibal Hanschke/AFP

Visitors contemplate on a projection during the world premiere of a new work by the Japanese artist Ryoji Ikeda in Sydney. The work, entitled Test Pattern, is a major installation lit by a series of projectors Photograph: Saeed Khan/AFP

Garment workers in Bangladesh look after a colleague who was injured by rubber bullets fired by riot police during clashes in Dhaka. Thousands of demonstrators blocked two important roads into the Tejgaon industrial area demanding wage rises and payment of overtime Photograph: Andrew Biraj/Reuters

A worker lays out fish to dry on Cilincing beach, north Jakarta, in this surreal image by the acclaimed photographer Beawiharta. The small family-run factory sells the dried fish to the local market every day Photograph: Beawiharta/Reuters

Visitors interact with the Serpentine Gallery Pavilion which opened this week in London. It was designed by Japanese architect Sou Fujimoto and has a cafe inside a latticed structure of steel poles Photograph: Peter Macdiarmid/Getty

Queen Elizabeth attends a service celebrating the 60th anniversary of her coronation at Westminster Abbey in London. The Queen returned to the scene of her coronation to mark a reign that has weathered six decades of social transformation and the end of Britain's global empire Photograph: Reuters

Libertad Contreras cries as she bangs a pot asking for justice before learning that her eviction by the Municipal Housing and Land Company had been postponed. Contreras has been living with her husband and daughter, her parents and four other siblings in a social rental flat in northern Madrid since 2005. None of the adults in the family hold a steady job Photograph: Susana Vera/Reuters