I get the feeling there's an agenda with the initial question. Simply put though, the answer is covered in the Terms of Service statement in the Announcement Section at the top of the pages.
http://www.derbytrail.com/forums/announcement.php?f=2
I'm not discussing specific instances, except to say that some of the people mentioned are choosing not to post and some are banned. Hate speech, intolerance and other anti-social behaviors aren't welcome here, and I'm sorry if you find my arbitration odious. Decisions are made with the greater good in mind, and I believe the atmosphere set via that administration to be as positive as it can be. Based on the fact that on a daily basis 300+ people are posting, more than 800 view the Forum, and we're averaging 50 new members a week, I'll stand by the decisions I've made.