Piers Morgan took to Twitter with an upsetting post on Tuesday as he revealed details of a shocking death threat.The Good Morning Britain star, 55, reached out to his 7.7 million followers as he called out an online troll who had targeted him on Instagram.MORE: Captain Sir Tom Moore's family are 'hurt' by cruel Barbados commentsSharing a snapshot of the message he had received, Piers wrote: "Another day, another death threat… this one from someone using the name 'stevienewcombe' on Instagram.