Terrorists from the radical Islamic organization Al-Shabaab underwent extensive planning before launching an attack on Garissa University College in Kenya yesterday, finding out where and when Christian students met to pray. The horrific attack left 147 people dead, and dozens more wounded. Four gunmen—who were eventually killed in the hours-long siege—separated Christians and Muslims, allowing Muslims to go free while holding Christians hostage, slaughtering many of them. After the attack, Kenyan officials released a wanted poster and announced a $215,000 reward for help in capturing a man named Mohamed Mohamud who may have had some connection with the attack. In 2013, Al-Shabaab terrorist took over a large mall in the country, and massacred more than 60 people over the course of several days …