Last week, Malawi's President was reportedly angered by Madonna's claim to have built ten schools in the country.
She is quoted as saying: "Where are the 10 schools she has built? She is just building school blocks at already existing schools. In some cases she just renovated an already existing block.
"This is an insult to the people of Malawi. She can't be lying to the world at our expense".
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Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
Windy this weekend with gales across northwestern parts of the UK. Rain spreading southeast.
Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."