Vinicius Junior has called racists "cowards" after he was allegedly abused during Real Madrid's 1-nil win at Benfica.
He briefly left the pitch after reporting Gianluca Prestianni, with the Champions League match paused for ten minutes under UEFA protocol.
The Brazilian has been subjected to racism on numerous occasions during his career.
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Former France defender Mikael Silvestre is an active campaigner against racism in football.