Democracy is simply the bleeding edge of societal change - it has only been around in it's present form since 1783 or so, and only was formulated in the Enlightenment that was first explored philosophically earlier in the 18th century.
Constitutional Republic, Parliamentary Republic...these are NOT Empires. No matter how laymen characterize them.
So all that stuff about 'Empires always fall' in the end is IMO just words.
Democracies will end too...when something more efficient and humane comes along. But the interregnum can be barbaric and bloody.
Human Rights are constantly evolving. The Human species IS moving away from violence and IS more conscious of individual rights and freedoms. Just ask Marie Antoinette and Anne Boleyn and even Jesus Christ.
But every societal transition almost always falls back to the last 'level' at some point - we as a species take 2 steps forward then 1 back. (In this case an argument could be made that the precious level is 20th Century Authoritarianism which grew out of 19th Century Victorian Colonial Empiricism).
IMO we are in one of these transition moments where the old ways (authoritarianism, feudalism, etc.) are desperately trying to hold on and push back against the new less violent and more humane ideas that came out of the 17th Century Enlightenment.
And we here at DU are in the Front Lines of pushing the new paradigm of Equality and Human Rights for All forward.
We WILL Win in the long run. (If we can adapt to the changing Climate - technology is another issue for another day.)