M.I.A., the British avant-garde music artist, has unacceptable opinions. Or so says London’s Field Day festival. The event’s organisers cite her “online comments” as they rescind their booking request, in a move that should worry all musicians. The London-born rapper M.I.A., whose real name is Mathangi “Maya” Arulpragasam, published her correspondences from the festival this week. “We must consider the wider risks to the festival and its stakeholders” they explained and informed her they “cannot continue with [their] offer”.