Comment by TFYS

The trouble with this is that a criminal that has enough capital to back him/her can use the media to make it seem like it's a political hunt even when it isn't. Supporters of a corrupt criminal will benefit a lot from getting them elected, whereas the opposition needs to spend a lot of money just to keep things as they are. Usually these people are friendly to capital as well, and the opposition are the "little people" who can't organize enough money to campaign against these liars and their backers. I can't see better options here other than to use the state to protect themselves.