The Observer's 20 photographs of the week

British Lions player Manu Tuilagi puts two fingers behind the head of British prime minister David Cameron as the squad pose for a team picture at 10 Downing Street. Cameron later told Tuilagi that there was no need to apologise for the bunny ears prank Photograph: Sang Tan/AP

A Bangladeshi homeless woman sleeps at a bus stand in Dhaka. The latest Millennium Development Goals Progress Report indicates that fewer than a third of people in Bangladesh now live below the national poverty line. Research has shown that women have been the centerpiece of this impressive human development turnaround Photograph: Munir Uz Zaman/AFP

Ou Mei, a 45-year-old female migrant construction worker, shields her face from dust during a shift at a residential construction site in Shanghai. According to data from the World Bank, 68% of China's female population aged 15 and above participate in the labour force, compared with 58% in the United States, 51% in France and 53% in Germany Photograph: Aly Song/Reuters

Models present creations by Burberry Prorsum at Kensington Gardens during the 2014 spring/summer London fashion week Photograph: Ben Stansall/AFP

In the front row at Kensington Gardens were Hayley Atwell, Gabriella Wilde, Simon Neil, Alison Mosshart, Paloma Faith, Sienna Miller, Harry Styles, Suki Waterhouse and George Barnett Photograph: Gareth Cattermole/Getty

The fashion world then moved to Italy where Dsquared2 presented its spring/summer 2014 collection during Milan fashion week Photograph: Max Rossi/Reuters

In Isola del Giglio, Italy, the severely damaged side of the stricken Costa Concordia is visible after a parbuckle salvage operation successfully righted the ship. The 114,000-tonne cruise liner ran aground off the shore of Giglio in January 2012 Photograph: Marco Secchi/Getty

A man rides a motorcycle carrying his children along the top of a dam which is flooded by an overflowing river near Junyue township in Pengzhou, China. Residents have been crossing the river along the top of the dam to save on travel time, after fresh floods crushed a bridge near the dam in July Photograph: Reuters

Pakistani people walk through a storm near the Ravi river in Lahore Photograph: Arif Ali/AFP

A supporter of Ibrahim Boubacar Keita attends his presidential inauguration ceremony in Bamako, Mali Photograph: Tanya Bindra/EPA

A bank worker watches from a window as Occupy Wall Street protesters march in New York. The populist movement marked its second anniversary with a protest near the New York Stock Exchange Photograph: Joshua Lott/Reuters

Paul Beaty photographed the crime scene where a number of people, including a three-year-old child, were shot in a city park on the south side of Chicago Photograph: Paul Beaty/AP

In Aleppo, Syria, rebel fighters inspect a stairwell during fighting against Syrian government forces. US secretary of state John Kerry urged China to play a 'positive, constructive' role at the United Nations on a resolution to rein in Syria's chemical weapons Photograph: JM Lopez/AFP

Photographer Narciso Contreras was back in the country to continue his excellent work documenting the civil war. Here, a Syrian opposition fighter rests inside a cave at a rebel camp in Idlib province Photograph: Narciso Contreras/AP

Ultra-Orthodox Jewish children play next to a wooden 'sukkah', a traditional booth built for the seven-day-long Jewish holiday of Sukkot, the Feast of Tabernacles, in Jerusalem Photograph: Menahem Kahana/AFP

Egyptian security forces try to help Giza police General Nabil Farrag who was shot after unidentified militants opened fire. They had been deployed to the town of Kerdasa to drive off suspected Islamists taking control of the town near Giza Pyramids, Egypt Photograph: Ahmed Abdel Fattah/AP

A stray dog rummages for food among debris in La Pintada, Mexico, after heavy rains hit the country causing landslides and flooding Photograph: Ronaldo Schemidt/AFP

A giant panda cub born last month relaxes at Schoenbrunn zoo in Vienna, Austria Photograph: Xinhua/Landov/Barcroft

Hundreds of tents are pitched at the 2013 International Camping Festival in Mount Wugongshan, China. The event attracted more than 15,000 campers from all over the world Photograph: Reuters

An Afghan refugee holds her daughter as she walks to her home through an alley of a poor neighbourhood on the outskirts of Islamabad, Pakistan. Pakistan hosts more than 1.6 million registered Afghans, the largest and most protracted refugee population in the world Photograph: Muhammed Muheisen/AP