Day in pictures: 10 December 2014

A man walks past a collection of signs opposing the gentrification of Mission District by technology companies in San Francisco. A Google commuter bus was blocked for about half an hour on Monday morning, highlighting some residents' growing concern that an influx of affluent technology workers is driving up costs in the city.
Guests gather for the lighting of a Christmas tree outside the official residence of Britain's Prime Minister David Cameron.
Tens of thousands of South Africans joined dozens of world leaders, including US President Barack Obama, for the national memorial service for former President Nelson Mandela.
Pro-EU protesters in Kiev wear gas masks as police move to break their blockade of Ukrainian government buildings. Several people were hurt as police advanced overnight, before a deadline for the demonstrators to lift their blockade.
In Brazil students from the School of Communication and Art of the University of Sao Paulo perform a skit titled, Blind Ones, as a protest against consumerism.
US Secretary of State John Kerry addresses the American Jewish Joint Distribution Committee (JDC) centennial celebration in Washington.
People head to work on the back of a vehicle in Naypyitaw in Burma. The country will host the 27th Southeast Asian (SEA) Games later this month.
Avril Lavigne performs on stage during the Jingle Ball in Chicago.