Jeffrey Gettleman of The New York Times reports on Somali militants who separated Christians out of a group of Kenyan miners and killed them near a gravel pit. The Muslims in the group were spared. “Innocent Kenyan lives have been lost, in a most harrowing manner, to these animals,” Kenya’s president, Uhuru Kenyatta, said. Shabab, a militant group and an affiliate of Al Qaeda’s southern Somali operation, took responsibility for the slayings.