Vincent plays Joey Silva, an Italian-American actor, who (in the likes of the infamous and politically incorrect “Iron Eyes Cody”) plays countless Native American roles in hundreds of “Cowboy and Indian” films in the 60’s and 70’s (a disrespectful casting blunder that is thankfully a practice of the past.)

https://www.imdb.com/name/nm0001759 (click on "The Comeback Trail" link)