ID a cartoon: Sad Indian singing "Home On the Range"...

[Ranchoth]

Something I’ve been puzzling over, but I can’t find an answer to, despite my searching.

I’m trying to ID a cartoon I saw on TV as a kid.* I think a movie, and either a Western, or had different historical settings for different sections. From the animation quality/style, I’d guess it was made anywhere between the late 60s and the early 80s.

The scene in particular that I’m recalling took place at night, on a hill overlooking a rowdy, Wild West Boomtown—I think on the plains, and I’m seeming to recall it was on the route or at the meeting point of the Transcontinental Railroad.

On the hill, though, is a dejected Indian on horseback, posed very much like Fraser’s “End of the Trail” sculpture.

The poor fellow proceeds to sing a morose version of “Home, Home on the Range,” during a montage over the town and it’s proto-Urban blight, bar-brawling cowboys, etc.

At the end of the song, the Indian plants his spear in the ground, not unlike a grave marker, and he and the horse slink offscreen, defeated.

Yowie. Grim stuff.

But I’ve been having a devil of a time trying to figure out what cartoon this was—not at all helped by the fact that Disney made an animated movie called “Home on the Range.” But even searching IMDB for works that used the song was no luck.

So…can anyone help me out?
*And I would have seen it anytime between the mid-80s and the late-90s, but I’m thinking early 90s.

[NDP]

I think that cartoon is actually from the mid to late 60s. It was a segment of a Mr. Magoo special on the history of the US and, as I remember, it was worse than you described since it also showed animals (i.e., “the deer and the buffalo”) getting slaughtered, mountains being paved over, and trees being ruthlessly hacked down leaving, at the end, a modern American city with smoggy skies, polluted rivers, and trash strewn everywhere. It was kind of a forerunner of the “crying Indian” PSA campaign a few years later.