>> What do we know (from actual examples of things that really happen) when it comes to the potential for a government to be accountable to its citizens?
Well, we know from the history of the human race that people have pretty much always been ruled by some evil scumbags. Today is no exception. The scumbags come and go, but rule remains.
As for accountability.. I'm not sure even revolutions really count. How many times has been some insane, evil dictator been forcefully de-throned, only to get replaced by someone just as shitty, or even worse?
How accountable was Stalin to "his" citizens? -Hitler? Mao? Pol Pot? .. and so on. History is full of monsters and genocides, and even if some dictator gets killed in a revolution after he's tortured people for, say, 20 - 70 years, so fucking what? Is that "accountability"?
>> In the actual world that we live in, do we have democracies that function pretty darn well? Yes (all of Scandinavia, Iceland, Switzerland).
You have to realize that there's corruption and secret dealings behind the scenes everywhere. In every country. I'm Finnish myself, and Finland is no exception. The corruption here is not as blatant as in Mexico or whatever, but it's there.
>> would you rather be born in the U.S. or in a country in Scandinavia? In which country do you believe you would find yourself most empowered viz. society and its governance?
I'm not empowered by "governance" - I'm enslaved by it, just like everyone else on earth.