A boy sits on a truck loaded with the belongings and pets of a displaced family that used to live in a stilt house in Altamira but are being resettled in a new urban dwelling. They were forced to move as a consequence of the flooding that created the Belo Monte dam reservoir on the Xingu River. At least 30,000 people (some NGO's estimate 40,000) were torn from their homes and relocated to settlements on the town's outskirts. Resettlement of residents was one the causes that led to increased violence in the city. Neighbourhoods that were dominated by specific gangs ended up mingling in the new settlements leading to territorial disputes and violence.