"American bloodlust," but the case against the banks, and their enablers, is far less clear than the one against BP. And history shows that, in the case of economic collapse, justice may lie more in the collapse than in the search for culpability.
The FTSE 100 gains more than 1% as oil shares rise.
Leading European oil groups gained more than 5% on Thursday after OPEC's surprise output cut plan. But analysts are unsure the agreement amounts to much.
Energy stocks rise even as oil prices give up initial gains.
The oil cartel will reduce energy output at its next meeting in November, according to reports.