The weekend in pictures

Sao Paulo, Brazil: A man helps his family out of their car, which caught fire after driving through a burning barrier, set up during a protest against the country's upcoming football World Cup. Photograph: Nacho Doce/Reuters

Cairo, Egypt: Green laser-pointers are used in a pro-military rally marking the third anniversary of the uprising that toppled president Hosni Mubarak in Tahrir Square. At least 54 people have been reported dead in clashes over the weekend. Photograph: Hassan Ammar/AP

Perton: Competitors slide down a muddy bank during the Tough Guy event, a gruelling cross-country endurance race.
Photograph: Darren Staples/Reuters

New Delhi, India: Sikh soldiers march during the annual Republic Day parade. Photograph: Saurabh Das/AP

Bangkok, Thailand: Anti-government protesters attack a voter near a polling station. Protestors have surrounded polling stations, chaining gates shut and threatened voters in order to stop advance ballots from being cast ahead of this week's general elections.
Photograph: Reuters

Vancouver, Canada: A boat sails on the Salish Sea as dense fog hangs over the water. Photograph: Darryl Dyck/AP

Kiev, Ukraine: Anti-government protesters create a barricade of burning tyres during clashes with riot police.
Photograph: Volodymyr Shuvayev/AFP/Getty Images

New York: A taxi drives along a snowy street in Brooklyn. Photograph: Andrew Kelly/Reuters

Tongi, Bangladesh: Muslims take part in prayers at the conclusion of the Biswa Ijtema, the world's second largest annual Islamic gathering. Photograph: Munir uz Zaman/AFP/Getty Images

Vatican City: A dove released during angelus prayers conducted by Pope Francis, is attacked by a seagull in Saint Peter's Square. Photograph: Alessandro Bianchi/Reuters

Geneva, Switzerland: Louay Safi, spokesperson for the Syrian National Coalition, talks to journalists at the United Nations headquarters. Both sides in Syria's bloody conflict met for the first day of peace talks in nearly three years.
Photograph: Anja Niedringhaus/AP