"Denialism...

"...is more than just another manifestation of the humdrum intricacies of our deceptions and self-deceptions. It represents the transformation of the everyday practice of denial into a whole new way of seeing the world and – most important – a collective accomplishment. Denial is furtive and routine; denialism is combative and extraordinary. Denial hides from the truth, denialism builds a new and better truth."

The rest of the story:
From vaccines to climate change to genocide, a new age of denialism is upon us. Why have we failed to understand it? Denialism: what drives people to reject the truth by Keith Kahn-Harris (The Guadian)