Is Free Speech Racist?

Every day, your newspapers and airwaves are full of angry contrarian commentators, all shouting over one another about how they are being silenced, but of course, "you can't say that in this country any more".  This is not unique to Ireland or England or Sweden; those demanding an "open and honest" debate (and who usually deliver anything but) are part of a broader movement using similar tactics to try to present their ideas without having them scrutinised or questioned.  Academic Gavan Titley joins me to talk about his upcoming book "Is Free Speech Racist?", which examines how this came to be, the forces driving it and what attempts to create a new crisis of free speech mean for the public discourse.