President Trump's ban from various social media raises the question of their regulation. Are they right to ban him, and what are the implications? We ask Nancy Mace, a newly elected Republican representative of South Carolina. Cory Doctorow, blogger, author and activist in favour of liberalising copyright laws, says that Apple and Google can't blame inadequate moderation for their banning of social network Parler on their platforms. And we hear from Professor Shoshana Zuboff, author of a book The age of surveillance capitalism, who thinks the law will bring the beginning of the end of 'Big Tech'. .(Picture: Trump's Twitter profile showing the account is suspended. Credit: Getty Images.)