Rollerball.1975.

Rollerball is a 1975 science fiction sports film directed and produced by Norman Jewison.[7] It stars James Caan, John Houseman, Maud Adams, John Beck, Moses Gunn and Ralph Richardson. The screenplay, written by William Harrison,[8] adapted his own short story, "Roller Ball Murder", which had first appeared in the September 1973 issue of Esquire.[9] Although Rollerball had an American cast, a Canadian director, and was released by the American company United Artists,[10] it was produced in London and Munich.[11][12]
https://www.youtube.com/watch?v=Z_fGfjZrPfM And Then They Came for the Books...
Truthstream Media