I think you're looking at history through rose colored glasses, just look at the civil rights movement, the Vietnam war, westward expansion of the U.S.. There's really nothing new going on, Democracy is messy, society is messy, look at the anti-communist propaganda and laws in the U.S. back in the 50s, the Kent State massacre. It's like when teenagers do stupid things because they're struggling to understand the world.
Democracy doesn't compensate for the lack of ethics in the society, obviously, but just like letting a teenager experiment and have freedom society will make mistakes in the process of learning. This angst I'm reading from you all seems to come down to believing an embellished version of recent history, and possibly some naivety toward Republican sincerity with their beliefs. The U.S. has for the most part been a bit wild with just short periods of calm like we in our generations have experienced, something I attribute in part to Democracy, I mean look back just before Democracy, you have the Dark Ages.
Democracy seems to have worked so well that many people now dissociate with their culture's not too distant past of savagery.