Machine Gun Preacher(2011)

Sam Childers, a former drug-dealing criminal, undergoes an astonishing transformation and finds an unexpected calling as the savior of hundreds of kidnapped and orphaned children. When ex-biker-gang member Sam Childers makes the life-changing decision to go to East Africa to help repair homes destroyed by civil war, he is outraged by the unspeakable horrors faced by the region's vulnerable populace, especially the children. Ignoring the warnings of more experienced aide workers, Sam breaks ground for an orphanage where it's most needed--in the middle of territory controlled by the brutal Lord's Resistance Army (LRA), a renegade militia that forces youngsters to become soldiers before they even reach their teens. But for Sam, it is not enough to shelter the LRA's intended victims. Determined to save as many as possible, he leads armed missions deep into enemy territory to retrieve kidnapped children, restoring peace to their lives - and eventually his own.