Suspected crack users sit inside a van as they wait to be taken to a shelter after being removed from the streets by social workers near the Parque Uniao slum in Rio de Janeiro, Brazil,

 

              Suspected crack users sit inside a van as they wait to be taken to a shelter after being removed from the streets by social workers near the Parque Uniao slum in Rio de Janeiro, Brazil,
Suspected crack users sit inside a van as they wait to be taken to a shelter after being removed from the streets by social workers near the Parque Uniao slum in Rio de Janeiro, Brazil, Wednesday, Oct. 17, 2012. Health officials are locating and treating hundreds of crack addicts suddenly left without drugs after police occupied dangerous slums this week where the users congregated en masse to buy and smoke the potent drug. (AP Photo/Felipe Dana)