Who Caused the Economic Crash?

http://voxpoliticalonline.com/2016/09/25/corbyn-teaches-marr-the-hard-facts-about-the-crash-and-austerity/
Economic Crash caused by banks

Mike Sivier wrote on The Crash and Austerity where Jeremy Corbyn, in an interview with Andrew Marr, reminded him that the economic crash was caused by the banks, NOT by government spending, yet austerity had been imposed on the UK public because of this. And all to no benefit.