You are probably angry at big banks. You are also probably angry about Congress not doing enough to your liking to rein in big banks.
Question: where do you bank?
Big banks are only big banks because, well, because a lot of people bank with them. If fewer people bank with those big banks, those banks that treat your retirement fund like Monopoly money, sooner or later, those big banks won't be so big anymore.
This is the principle behind the Move Your Money movement. It encourages those who have their money in a big bank to get that money out of the big bank, and place that money in a smaller, more responsible community bank. Don't know which ones are responsible? They've already figured it out for you.
Hop to it.