Hey, two men! Stop fucking each other! That's not natural!
Hey, man and woman, stop marrying each other! That's not natural!
Hey, modern technology, destroy yourself! That's not natural!
Hey, big cities, burn yourselves down! That's not natural!
Hey, homo erectus, put out that fire! That's not natural!
Hey, australopithecus, what you doing walking on the ground? That's not natural!
Hey, early primate, what you doing up in that tree? That's not natural!
Hey, early mammal, stop giving birth to live young! That's not natural!
Hey, eusthenopteron, stop walking on LAND! That's just plain perverted!
Hey, early fish, what you doing with fins? Take them off! It's unnatural!
Hey, little wormy? What's that you got there? What? A BRAIN? That's not natural!
Hey, multicellular organism! Stop clustering together, that's not natural!

And so on and so forth.

Hooray for conservative ideology!