"The Wild Bunch" (1969) Directed by Sam Peckinpah.
A western set at the end of the Old West in 1914. A group of outlaws, seeing the end of life as they know it, attempts one last big heist.
This movie was released to much controversy, largely due to the violent scenes filmed in slow-motion.
Some folks might call the film nihilistic, but I'd call it esprit de corps.