You were not banned for posting your natural selectionist views. You were banned because we as a medical site have a rule against posts that are violent in nature, or encourage violence.
I'd suggest you re-read the ban message, and understand it, instead of accusing mod staff of banning you for your VIEWS. This is simply an issue of respecting site rules. Also, it's poor form to post gripes about your ban. That should always be discussed privately.