In a small shelter made of cinder block walls and a tin roof, Armando Hurtado Medina writes on a whiteboard the size of the TVs in many American homes.
It's 6pm and lessons have just begun in this makeshift classroom found at the end of a bumpy dirt road that winds its way through a canyon in Tijuana, Mexico. Hurtado Medina is teaching basic English and about 10 students of various ages slowly recite the alphabet back to him.
In another part of the city, Sergio Garcia has just finished his day teaching a group of children about emotional intelligence, guiding them on how they can turn the anger and trauma they feel into something productive, like leadership.
