The most basic thing you can do to start with is to contact your elected representatives and demand action, and I’d be willing to bet most people haven’t even done that. Make a stink; contact the media, the government, and get others to do the same. Start building a unified demand for change that becomes impossible to ignore.

Escalate from there as needed. Corruption doesn’t go away because you asked it nicely. It has to be forced out like cancer from the body.