The article also says that gangs are responsible for 2,500 deaths between January and March alone. There's no amount of knowledge that was going to keep these people safe. And the truth is, religion can lead to fool-hardiness quite quickly, and I say that as someone who was raised in the church. Their deaths are tragic, but also avoidable.
Tragic Attack in Haiti: U.S. Missionary Couple and Haitian Colleague Killed by Gangs ( thenarinder.in )