Reuters photographer Paulo Whitaker photographs crack dealers and users from inside an abandoned building in the part of Sao Paulo's Luz neighborhood known as Cracolandia (Crackland), April 28, 2010. After 30 years of heavy drug trafficking and abuse in the district, Sao Paulo City Hall is implementing a program to clean up Crackland but the problem is only worsening. Picture taken April 28. REUTERS/Fernando Donasci (BRAZIL - Tags: SOCIETY POLITICS CRIME LAW)