The people who live in a golden age usually go around complaining how yellow everything looks.
It is true that some liberals and humanists, along with the laid-back Danes, deny the existence of evil. This is largely because they regard the word 'evil' as a device for demonising those who are really nothing more than socially unfortunate.
Scratch the surface of what's socially normal. I suppose in some way all of us have something we display to the public and things we feel too ashamed of or uncomfortable with to reveal to other people.