In the most important sense a creationist is a person who believes in creation, and that includes people who believe that Genesis is a myth and that creation involved a process called evolution and consumed billions of years.
I think the best way is to forget about racing people and just find territory that's fresh.
With Westerns you have the landscape is important, and it's empty, and only you populate it. When you populate it, you can tell any kind story that Shakespeare told, you can tell in a Western.

