ST:TNG, Journey's End, Episode 720
This episode had been mentioned to me a few times throughout my watching of the series. It's "the one where Wesley goes off with the Traveler."
Yeah, yeah, Wesley is special. I've had that beaten into me the entire series. Finally, we sort of see why, and get some closure on it. That's pretty much what they have to do in these last few episodes: wrap up secondary characters with plot ties to the mains.
But seriously: this episode aired in 1994. Which I seem to recall was long after calling Native Americans "Indians" in any context was a more than a little bit offensive. But apparently, the 24th century has all but forgotten that, as well as the horrible treatment of any religious or cultural heritage presented in the show.
Seriously: Wesley goes on a spirit journey. People talk about speaking with their spirit animals. And thinly-veiled references are made to the righting of ancient wrongs.