I know this is a bit vague but you could try taking issue with short selling.
On the one hand you could argue that it improves efficiency and acts as a strong incentive for firms to remain efficient. i.e firms cannot rely on their share price holding up despite lax management as short selling would pull the share price down.
On the other hand you could argue that short selling can result in firms with relatively healthy ballance sheets seeing their share price fall through the floor due to short sellers bringing prices down, leading to uncertainty, leading to further price drops, etc etc

This way you could bring in all the arguments for the free market on the “for” short selling side, and use all the information from this recession and its links to short selling on the “against” short selling side of the argument.

Maybe something like “Short selling: the achilles heel of a free stock market” or something ridiculously cheesy of that ilk!

The greed of corporate America and it’s CEOs in particular have lead to our current financial woes.