History is only progress and moving to democrasy
Pure democracy may be a good thing. Pure democracy means giving power to 100% of the people. But modern democracy is not like that. Sometimes 40% or even less votes are needed to win an election. And if an ethnic group comprises 40% of the population and votes
en bloc for a particular political party, then that party can afford to ignore the remaining 60%.
That's one of its flaws, even in ancient times. That's why it has been called "tyranny of the many". Socrates was deeply critical of direct democracy - and rightly so, it got him killed. Representative democracy was created to avoid descending into mob rule but it is far from perfect as well and can end up with the population divided into camps, like what we are seeing now in the US.