The Violent Ones (1968)

Synopsis
When a young resident of a peaceful Mexican village is brutally raped to death, the evidence points to one of three strangers in town, all of whom are Mexican-hating Anglo-Americans. The father of the dead girl hates all whites and is eager to lynch all three to make sure they get the culprit, but the sheriff, even though he too is not fond of the gringos either, fights to see that real justice prevails. ~ Sandra Brennan, All Movie Guide