A woman crosses an open sewer as she makes her way to her house in a Christian slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

A woman stands at her house's doorstep at a Christian slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

Visitors stand next to a JF-17 Thunder fighter jet during the last day of the International Defence Exhibition and Seminar “IDEAS 2014” in Karachi December 4, 2014. At least 88 delegations from 47 countries took part at the 8th biennial IDEAS 2014 at the Karachi Expo Centre, local media reported. (Photo by Akhtar Soomro/Reuters)

A girl looks over at her house at a Christian slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

A woman cooks during a power shortage at her house at a Christian slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

A woman carries her baby as she stands at the doorstep of her house at a Christian slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

A girl looks back as she stands above an open sewer outside her house at a slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

A women cooks,as her family members sit beside her in their house at a Christian slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

A man plays with his son as he sits at his one-room shack at a Christian slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

Girls talk to each other in their one-room shack while their grandmother sits outside, in a Christian slum in Islamabad December 4, 2014. (Photo by Zohra Bensemra/Reuters)

People ride a swing at the Lake View park in Islamabad December 4, 2014. (Photo by Faisal Mahmood/Reuters)