This is true, but the root of modern democracy has its birth in the same line of hard working and responsible way of living humbly.
Romans and USAmericans both owned slaves.
Modern democracy is build on a core belief that everyone is created equal and that we are each responsible for our own lives. Something which extremely similar to the core thesis of Lutherism which laid the foundation for the renaissance and the Age of Enlightenment that eventually led to modern liberal democracy.
It’s a lot more complicated than that of course, but this is the Internet not a PhD. :)