Roberto Di Matteo has accused John Obi Mikel's Twitter trolls of hiding behind their keyboards as he condemned the racist abuse of the midfielder.
The Blues have contacted the police over two "totally unacceptable, disgusting and abhorrent" posts directed at Nigeria star Mikel following Wednesday's Champions League draw with Juventus. The abuse occurred at around the same time Mikel deleted his Twitter account.
Manager Di Matteo said: "His intention was to close the account anyway. So it was a good reason to close it. The social media world, especially Twitter - because it's anonymous and so on - it's a dangerous vehicle to express yourself. I don't think it's fair. If somebody has to express his opinion, he should put his face to it."
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