I just watched 60 Minutes on CBS and was blown away by how the once murder-capital-of-the-world city of Medellin has been transformed by officials who care about ordinary, working people and put their needs first. After the drug wars, much of the population had fled up a steep mountain, where a slum had developed, similar to the "favelas" of Rio de Janeiro, Brazil. These people were isolated and cut off from jobs and services in the city below, until officials stepped in and built escalators and cable cars to transport people up and down the mountain.
This affordable transportation system was not built for tourists, but adventurous tourists soon caught on, and publicized the area as a place worth seeing.
The U.S.A. lags so far behind other developed countries in its provision of mass transit and its support of ordinary working people, it's an international disgrace.