Gunsmoke S18E24 - This Golden Land

Russian-Jewish farmer Moshe and his family come to Kansas to try to take advantage of the land. However, their traditions are mocked by the cowboys around, notably a neighboring farm family. One night, one of Moshe's sons and the neighbors get into a fight, and the son is found dead of a broken neck soon afterward. Moshe witnessed the start of the fight but not the actual killing. Under the Mosaic law he treasured, he cannot testify and without his word the farm family is set free. Moshe's second son buys a shotgun and threatens the neighbors with it to compel them to confess, but wastes his powder firing at imaginary targets and is run off the farm. The neighbors then invade Moshe's farm in an attempt to drive him off for good.