Druids

Note that although druids are nature themed and advocates of natural order and often claimed to maintain "balance", they are far more commonly depicted as violent extremists who are against changing the current state of nature (which in itself is not natural no matter how it preserves it). In essence, druids are depicted as preservers, intent on making sure what was is not lost, but often hurt nature by doing so (they deny the potential for evolution, improvement, and such as that breaks what they want to preserve). Easily comparable to animal rights activists (extremists really) who actually do more damage than good with their raids.

It is not required that the druids know any form of magic or have any supernatural powers.