Brides sit quietly as they wait to take their wedding vows during a mass ceremony in New Delhi, India. (REUTERS/Anindito Mukherjee)

President Barack Obama talks with a pre-kindergarten class at Powell Elementary School in Washington, D.C. (REUTERS/Jonathan Ernst)

A polar bear cub plays between the feet of mom Gerda in Novosibirsk, Siberia, at the city's zoo. (AP photo/Ilnar Salakhiev)

A mother walks her daughter to school in Islamabad. (REUTERS/Sara Farid)

Ultra-Orthodox Jewish men dance before the start of a mass prayer in Jerusalem. Hundreds of thousands of ultra-Orthodox Jews prayed in protest against a bill meant to slash military exemptions granted to seminary students, a tradition held since the founding of Israel. (REUTERS/Darren Whiteside)

Children stand on a subway air vent during Carnival celebrations in Caracas, Venezuela. (AP Photo/Rodrigo And)

Men sit with Komondor dogs during the first day of the Crufts dog show in Birmingham, England. (REUTERS/Darren Staples)

Performers grab a quick smoke before closing events of Carnival in Santo Domingo. (REUTERS/Ricardo Rojas)

Wrestlers work out at a traditional Indian wrestling center in Mumbai. (REUTERS/Danish Siddiqui)

An old building sits behind Niagara Falls as sub-freezing temperatures cloud Ontario. (REUTERS/Mark Blinch)

A man photographs a Bulgarian communist-era monument painted in the colors of the Ukrainian and Polish flags in Sofia, as what appears to be an artistic condemnation of the Russian stance toward Ukraine. (REUTERS/Stoyan Nenov)

Director and producer Steve McQueen (center) celebrates his Oscar for best picture at the 86th Academy Awards. (REUTERS/Lucy Nicholson)

**Check out last week's best photojournalism**