5:00 AM, April 2, 2015, Garissa University College, Garissa, Kenya. For sleepy heads it’s time to roll over and get a few more hours of sleep. For all nighters it’s time to grab another cup of coffee and push a little harder. For serious students it’s time to get up and review for today’s exam. For party types it’s time to find a bed somewhere and sleep it off once again. For committed Christians it’s time to gather for prayer. For al-Shabaab it’s time to kill. For Josephine, student leader of the Cru movement on campus, it’s time to die… The Christians gathered at the appointed time, 5:00 AM, under…