Teenage years are difficult at the best of times but a lack of experience in relationships and issues with self-confidence can mean young people feel they have nowhere to turn.
Many victims, as well as perpetrators, come from abusive homes themselves and therefore don't realise how wrong these kind of relationships are.
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The band announced at a free concert on Friday that they would take over the event's Pyramid stage on Saturday June 25.
The victims were collecting permits and escorts a day after their home town was liberated from the extremists.
Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.