For the series "A Search for Change," we hear from community organizer Lateefah Simon. She saw her childhood neighborhood destroyed by the influx of crack in the 1980's. She now works with young people on the streets of San Francisco, focusing on drug problems, people with HIV, and teenage mothers with nowhere else to turn. She’s not out to change a country or even a city or a street. She works to change lives - one at a time.