This is an "old" video (2006) from TED Talks. It's 18 minutes long, but check out the interactive transcript on the right margin (clicking a phrase takes you directly to the video snippet).

http://www.ted.com/talks/majora_carter_s_tale_of_urban_renewal.html

Here's an excerpt:

Let's take Bogota. Poor, Latino, surrounded by runaway gun violence and drug trafficking: a reputation not unlike that of the South Bronx. However, this city was blessed in the late 1990s with a highly influential mayor named Enrique Penalosa. He looked at the demographics. Few Bogatanos own cars, yet a huge portion of the city's resources was dedicated to serving them. If you're a mayor, you can do something about that. His administration narrowed key municipal thoroughfares from five lanes to three, outlawed parking on those streets, expanded pedestrian walkways and bike lanes, created public plazas, created one of the most efficient bus mass-transit systems in the entire world. For his brilliant efforts, he was nearly impeached. But as people began to see that they were being put first on issues reflecting their day-to-day lives, incredible things happened. People stopped littering. Crime rates dropped. Because the streets were alive with people. His administration attacked several typical urban problems at one time, and on a third-world budget at that. We have no excuse in this country. I'm sorry. But the bottom line is, their people-first agenda was not meant to penalize those who could actually afford cars, but rather to provide opportunities for all Bogatanos to participate in the city's resurgence. That development should not come at the expense of the majority of the population is still considered a radical idea here in the US. But Bogota's example has the power to change that.