J.K. Rowling has 2 very firm tweets for critics of black Hermione

LONDON -- J.K. Rowling is running out of patience.

The Harry Potter author has already described critics of black Hermione as a "bunch of racists" in a recent interview with The Observer. And now she responded to those detractors on her very active Twitter account, because either she loves giving us things to write about or she still needs to learn not to feed the trolls.

On Thursday evening, someone tweeted at Rowling to describe the casting of Noma Dumezweni in the role of Hermione as "mind boggling".

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10 minutes later, Rowling hit back.

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On Friday -- the day after the first preview of Harry Potter and the Cursed Child had finished -- more people were tweeting at Rowling.

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This time, her response was even firmer.

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As rightfully dismissive as she's been of these critics, they will probably, sadly return. 

Harry Potter and the Cursed Child opens to the public on 31 July at London's Palace Theatre. The script will be released at the same time, in bookstores and online.

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