Contributor(s): Professor Lisa Appignanesi, Professor Rae Langton, Dr Stephen Law, Professor Peter McDonald | What does it mean to have a right to free speech, and who has the right to curtail it? Lisa Appignanesi, prize-winning writer, novelist, broadcaster and cultural commentator, is Visiting Professor in the Department of English at King’s College London. Rae Langton is Professor of Philosophy at the University of Cambridge. Stephen Law is Lecturer in Philosophy at Heythrop College, University of London. Peter McDonald is Professor of English and Related Literature at the University of Oxford. The Forum for European Philosophy (@LSEPhilosophy) is an educational charity which organises and runs a full and varied programme of philosophy and interdisciplinary events in the UK.