There are banks that don't follow the rule of law very well. Wells Fargo is probably the most famous for the many violations they have. There are others, who just play close...

Also check out the Consumer Financial Protection Bureau: https://www.consumerfinance.gov/policy-compliance/enforcement/ that lists companies who don't "play well" with the laws. You can use one of the cases there or others from the links or do research and identify:

The company, describe what they did to be fined or investigated (by who?) and the legal action. Have they learned their lessons?