TV historian forces apology from Twitter troll

Television historian and Cambridge professor Mary Beard has forced a Twitter troll to apologise after publicly naming and shaming him.

The male Twitter user had sent an obscene message to Professor Beard that she then retweeted to her 42,000 followers, saying she was "not going to be terrorised."

Asked by another user why she didn't just ignore the insult, Professor Beard replied:

The offender's apology read: "I sincerely apologise for my trolling. I was wrong and very rude. Hope this can be forgotten and forgiven."

Professor Beard, 58, then agreed to delete her retweet once the original offensive message was removed: