Fort Robinson is another of the many sad, sickening places in the Plains where Native Americans were fucked over royally. Here's a nice description of the fort from Liz, who recommended it: "You may be interested in a mildly morbid place called Fort Robinson, which is 30 minutes west of my home town. This is the place where Dull Knife and his people escaped the US Cavalry, only to be re-captured and sent to Ft. Sill, and also where Crazy Horse was murdered."
The land of the free, indeed...