From The Truth about Evil by John Gray:
Whatever their position on the political spectrum, almost all of those who govern us hold to some version of the melioristic liberalism that is the West's default creed, which teaches that human civilisation is advancing - however falteringly - to a point at which the worst forms of human destructiveness can be left behind. According to this view, evil, if any such thing exists, is not an inbuilt human flaw, but a product of defective social institutions, which can over time be permanently improved.
Paradoxically, this belief in the evanescence of evil is what underlies the hysterical invocation of evil that has lately become so prominent. There are many bad and lamentable forces in the world today, but it is those that undermine the belief in human improvement that are demonised as "evil."
An impressive essay.