Democracy is the best we have for the people. But while the theory is sound, the practical implementation is usually flawed.
The people are "in power" just for that day while they're giving their blessing to their representative. After this, as long as things aren't too abrupt and disadvantage the regular person obviously enough to trigger a violent response, that representative can pretty much represent and defend any other point of view. Usually the one from the otherwise equal but not quite equal, much richer person. And with education being on the bottom of everyone's list, it just gets easier to cover these things up.
For things that concern interests far from home it's even easier. Freedom also means you're free to pump as much one sided information as possible. So as long as one can flood the people with Middle Eastern terrorism, Russian hackers, or Chinese human rights abuses, who's going to care about the home team doing the same even at home?
Superficially democracy is alive and well but it's like religion, most people observe it only in theory and when it matters to them personally. And when it does matter to them, it doesn't matter to enough other people. Which is why most talking points don't have a strong majority, and they're mostly dealt in a compromising way, which makes everyone equally unhappy (except a very few).