The more rarefied a life you live, the easier it is to think that those who don't share it could be demonised. To find the common humanity becomes more of a struggle the more you surround yourself with nice things.
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.
Those who can't do, teach!