Full Idea
The extremes of left and right in politics have much more reason than Darwinists to be threatened by the 'new essentialism', because it must reinstate the concept of human nature.
Gist of Idea
Essentialism fits in with Darwinism, but not with extreme politics of left or right
Source
Brian Ellis (The Philosophy of Nature: new essentialism [2002], Ch.7)
Book Reference
Ellis,Brian: 'The Philosophy of Nature: new essentialism' [Acumen 2002], p.156
A Reaction
The point being that political extremes go against the grain of our nature. Personally I am favour of essentialism, and human nature. I notice that Steven Pinker is now defending human nature, from a background of linguistics and psychology.