At the famous Oxford Union, Mehdi Hasan challenges former top financial regulator Lord Adair Turner on the role of the banks, the politics behind austerity and whether capitalism has failed.It seems that mistakes made in Wall Street and the City of London are paid for by people around the world, but can we govern greed within the realm of capitalism or is it all just money down the drain Is austerity really needed Can we trust the banksJoining our discussion are: Jon Moulton, a venture capitalist and the founder of the private equity firm Better Capital. He has nurtured a reputation for forthrightness even to point of challenging his private equity peers for abusing tax regimes. He is also one of the few men in the City of London who warned about the impending crash before it happened; Professor Costas Lapavitsas, who teaches economics at the School of Oriental and African Studies (SOAS) at the University of London and is the author of several notable books on the crash and its consequences including Crisis in the Eurozone and Financialisation in Crisis; and Ann Pettifor, the director of PRIME (Policy Research in Macroeconomics), and a fellow of the New Economics Foundation. She was one of the first to warn about the debt crisis in her book The Coming First World Debt Crisis, and is also well-known for her leadership of the successful worldwide campaign to cancel developing world debt - Jubilee 2000.