And what of the process by which "they" are chosen?
Well, how abouts you go back to the Republic and say how the Guardians are chosen or become Guardians. I can't argue in the abstract about my liberty; but, I can say that many other forms of gov't offer less. There isn't even a word for "freedom" in some languages. Democracy is not a particular form of gov't anyway. It's an idea. There have been plenty of democracies that have also utilized slave labor. That, for example, was Plato's Greece; and he never advocated changing that situation. Basically, a democracy is where the people can participate in gov't and vote in their leaders. That wasn't Plato's idea, or ideal, at all. If you're willing to give up your ability to affect or participate in gov't, then that's your prerogative. In oligarchies, monarchies and totalitarian regimes, you aren't guaranteed that opportunities. Now, you can argue that we have a plutarchy here where money rules; but, that is different from arguing against "democracy." Anyway, so who would you like to see with all the power?
"A man is rich when he has time and freewill. How he chooses to invest both will determine the return on his investment."