Revise what? Nothing less than the ideals of Manifest Destiny, which proclaimed the superiority of European white manly manliness. As soon as westerns became awesome, they began revising, folding, mutilating, and spindling this textbook tripe.
A little western history: The heroes in pre-1939 Westerns had to follow five commandments:
Thou shalt be white, male, heterosexual asexual.
Thou shalt . . . → Read More: Revising the West; or (Bucko’s) Top 10 Revisionist Westerns