Destry

In the old West, a small frontier town is being controlled by ruthless mob boss Decker (Lyle Bettger) and his cronies. After the local sheriff dies under mysterious circumstances, Decker arranges to have the town drunk (Thomas Mitchell) appointed sheriff, thinking he will be ineffectual. But the new sheriff sends for Tom Destry, son of a famous two-fisted lawman, to be his deputy... (imdb)