Name of a western movie?

Saw it years back. In the beginning a group of bandits raid a town and
enter a home. In the home there's a family: Father, mother, daughter,
son (main character). The father is killed while attempting to grad
his rifle and his mother and sister are raped and murdered. The boy
hides. A tattoo is revealed on one of the mens chest which the boy
later uses to identify the man and kill him at a saloon.

Thanks!