Mathare Valley is one of Africa’s largest slums. More densely populated than Manhattan, it is one of the poorest and most dangerous places in Kenya, especially for the 500,000 children living there. For Patrick, he couldn't just stand by. Patrick started a school for children in Mathare Valley. It's more than school, though: It's a sense of safety and — with Convoy of Hope — nutritious meals every school day."By taking the children into our school, we become father to them, counselor, guidance,