esteban jaramillo: we want to make things better for society.here aren't just bad guys living in this neighbourhood, killers and dealers. there are people who hold down jobs, who work as cooks, actors, or dancers. they have a perspective and prospects, a way out of the violence. >> in 2011, escalators were inauguarated that connect comuna trece with the city below. there's a drop of more than 380 meters from the top to the bottom. it is hard for outsiders to appreciate how bad things used to be. andres ramirez: try to imagine this without the escalator, or even proper steps, just dirt. well, that is how it was. people often had to carry their children on their backs to get to their homes up there on the hillside. >> global shapers learn from each other, their aim is to help drive social change and innovation. but not all activities are socially oriented or deal with urban planning. the conference is being held downtown. the participants come from all walks of life, law, business, the arts. they want to promote access to education and modern tech