With the World Cup months away, rights groups are warning tourists to stay away from young sex workers.
![Social activists are kicking off a campaign to highlight child prostitution ahead of the World Cup in June [AP]](https://www.aljazeera.com/wp-content/uploads/2014/02/201424125514618734_20.jpeg?resize=270%2C180&quality=80)
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Amid Pope celebrations, sombre remembrance for eight street children killed by police 20 years ago.
Some of Brazil’s most notorious slums have been “pacified”, and former child drug dealers are now mentoring youth.
