I remember having some general concept of power and money corrupting, and people in power furthering their own interests when I was a liberal. "Corruption" is this weird word that they use to cover up the system being inherently opposed to the working class by making it seem like it's just a few bad apples doing it. So you go on just thinking that if you can only get a good apple in power then good things can happen because it's the people who have been corrupted, not the system.