Friends of the Havasupai have often castigated whitefolk,-- their actions, aggression, and agencies-- for first banishing them to a small plot in a side canyon of the Grand Canyon, and then thwarting them for almost a century in regaining possession of only a small fraction of the land they used to occupy that runs from the Hualapai lands past Moenkopi and over toward the Hopi villages, as well as from the Canyon down south to the great east-west corridor that famed US 66 ran through.
In prospect, however, if not in fact, the Havasupai story, left to itself without whitefolk intervention and "protection", might well have been an even sadder episode of the XXth century. Consider:
Near-contemporaneously with the arrival and explorations of the Spaniards from the south, and their establishment along the Rio Grande, the Dine' -- the name "Navajo", "Navaho" is in much wider use-- were moving into the American southwest -- northern New Mexico, eastern Arizona, and lands bordering these areas. Early adopters of the ungulates, the Navajo were mobile and aggressive, riding their horses and bringing their sheep from the 1500's on such that by the 1700's, they were well-established near and surrounding the Hopi villages, coming up against the "Grand Canyon front".