Ok Google and DDG are not helping me. Is there a specific Native American gathering (from any or many tribes) where people sat in a circle and aired grievances, or got things off their chest? What many sometimes think of as a "Powwow"? (hint: It's not a powwow.) Similar to what the Vikings called a "thing" or "moot"? I have an opportunity to education White audiences, and want to be as correct as possible.