Does Australia have a Murdoch problem?

Half a million Australians, including two former prime ministers, want to see a royal commission into Rupert Murdoch's News Corp, and whether or not it's damaging to our democracy. They're serious charges, and half a million is a lot of people. So could it happen? And if it did, what would it actually achieve? Featured: Dr Denis Muller, Senior Research Fellow at the Centre for Advancing Journalism at the University of Melbourne