Keir Starmer, the Director of Public Prosecutions, said it could be appropriate for more popular tweeters to face prosecution if they tweet something “grossly offensive” to thousands of people, while those with only a few dozen followers might go unpunished. It follows concerns that police are increasingly ready to act against people who post offensive material online and are thus threatening free speech. This week a man was arrested in Kent for posting a photograph of a burning poppy.