Why Boko Haram's reign of terror has been tough to track

In early January, Boko Haram militants attacked the remote northern Nigerian town of Baga, but it was days before reports of the massacre got out, with estimated death tolls ranging from 150 to 2,000. Gwen Ifill speaks with Nii Akuetteh of the African Immigrant Caucus about disturbing reports about young girls being use as bombers and how recent violence will affect Nigeria’s upcoming elections.