Why not demand that the name of the university be changed? After all, isn’t Dakota another name for Sioux?
One proposal that Congress didn't adopt, before ND achieved statehood, was for it to be named Lincoln. Maybe they could revive that idea and call SD "Reagan."
The Florida State Seminoles are allowed by the PC types to keep their Indian name, but Illinois and UND are being forced to change. I think in most cases the university administrations are happy to cave in to any left-wing demand, and it is the alumni who resist.