"... around 4,000 Brazilian street children “disappeared” after being arrested in a social cleansing leading up to the 2012 UN Conference in Rio." If you doubt that try this:
http://www.pangaea.org/street_children/l...
and this:
https://answers.yahoo.com/question/index...
and this:
"TIL that around 4,000 Brazilian street children “disappeared” after being arrested in a social cleansing leading up to the 2012 UN Conference in Rio. The Brazilian government refuses to say where they are. Around 90,000 people have disappeared in Rio in only two decades. More than half are minors."
http://boston-massachusetts.us/til-that-...

Just for openers...

A modicum of free enterprise helped a whole lot. Unfortunately, the prelude to that was the "disappearance" of thousands of children without homes, living on the streets. The government just scooped them up, killed them, and buried them in mass graves to be forgotten.