Hi orda,
Agreed. Where folks have broken the law, act! This means you need a state capable of holding bankers to account.
But where bankers haven't broken the law and what they do is harmful to society nevertheless, change the damn law so they can't exercise that particular kind of freedom.
For anyone who finds it hard to comprehend restrictions on freedom, some kinds of freedoms are what we call crimes. The freedom to kill other people is a crime we call homicide. The freedom to take any property we wish is restricted by the fact we call this theft and make it a criminal activity. Similarly, there are financial activities which we may properly say are criminal - like the mis-selling of mortgages: bankers that falsify information about home buyers ought to face legal consequences; CEOs that encourage mis-selling of mortgages should face time in jail.