We should not have unequal justice, not different justice, if you are rich from that you receive if you are poor.
We should not have unequal justice, not different justice, on the basis of age or gender (other than juveniles who should be treated appropriately).
The best way to end bankster crime is to jail them, to hold them responsible in the same way people who cause great harm to others have those consequences. Those consequences should match the extent of that harm.
