Azizi, I've seen a number of literature and environmental discussion groups express the same kinds of concerns at the lack of diversity among participants. It isn't for lack of welcome, so it must be for lack of access or content to attract in such participants. It is a guess only that if people who can participate don't because they choose not to, then they consider these groups non-productive or to have baggage that they don't want to bother with. A lot of the folks on the discussion lists in question are bothered by that, but are also clueless as to how to fix it. They end up, as we have here to a large part, discussing the matters among themselves and taking up the necessary defence of positions that they understand academically but that they don't necessarily have first hand knowlege of. To be knowledgeable about a group but not a member of that group presents some problems even in these discussion groups themselves. You can be cast in the role of "apologist" or "wannabe."
Q, your suggestion of Thomas King as an example is right on the mark. He is well known for the humor and subversiveness of his writing. (You might want to check into his radio show Dead Dog Cafe.) It's no surprise to you perhaps that King and Owens were good friends, along with Gerald Vizenor and a few others who feel (or felt--Owens died in July 2002) the need for this kind of writing, that privileges the native reader.