That's just silly. Some facts are incontrovertible. Do you really think there's any room for disagreement that the earth is round, or that water freezes at 0 degrees C?
> One man's racism is another man's plain speaking.
There's no room in this world for racism, and you shouldn't be trying to defend it here - or anywhere.
Best to apply any moderation as minimally as possible. Tag posts which cause arguments as "controversial" and leave it at that.