They're not insulated from the legal system, the problem is the public is being misled.
It works like this: The media lies to the public and tells them that a CEO or Public Figure is getting away with X, so they get some washed up lawyer to do an opinion piece on it, a politician or two co-opts it, and possibly throws in some bait about the working class being screwed over, and then the public buys the made-up story- hook, line and sinker.
Since TV Law is not the same thing as real law, the person in question is put through actual due process and the allegation or accusation turns out to be unsubstantiated. The public then feels outrage because "The man on TV said this person was a criminal and he got away!".