Best argument against "we just need to vote the right people into office"?

I can imagine that the pro-democracy crowd would respond with two kinds of arguments here:

  1. It’s because the government hasn’t got enough power. Greedy businessmen and hateful extremist still have to much power to undermine state and society.
  2. It’s because, 'people didn’t vote for good politicians, who bear at heart the welfare of the people.

Right, so I would ask them what regulation is needed? As soon as they make the inevitable attack on excessive profits or speculation, voila! The door is open to teach some basic economics.

It’s like chess. You have to maneuver your opposite into asking the right questions, which are the questions you can answer and create a checkmate.

I didn’t understand this one. Could you rephrase it?

“Know when to give up a lost cause. Anyone who needs to be persuaded to be free doesn’t deserve to be.”

L. Neil Smith’s Lever Action.