The American photographer Charles Mostoller covers for famous newspapers like the National Geographic, the New - York - Times or the Wall Street Journal the questions involve by immigration or South America. The "Concrete Cowboys" serial deals with a reinstatment programm of young boys from destructurated families. A horses owner Malik Divers puts face to face these guys with horses. They must take care about the animals for learning the sense of responsabilities. It will help them to find quiet and serenity for resolving their problems.