Not really in agreement with some previous reviews.
This episode is proof (some others in the series much less so) that well-meaning stories with a slightly preachy but forcefully-delivered message - here of benign tolerance towards "visible minorities" - can still be entertaining, provided they are strongly enough scripted, filmed and acted.
Here it works in all three departments : the script is strongly-written and tightly-knit; acting is convincing; and filming, unusually elaborate for this no-frills series. It applies to how Mennonites are depicted, with close-ups of their leader which confirm something about their soul, strong-willed though adamantly opposed to violence of any kind, especially on their behalf - this actually fosters an interesting difficulty with their self-proclaimed knight, Paladin, who does not want to commit to that and indeed is obliged to shoot a man in legitimate self-defense; to the brief but tense and visually striking scene of the night fire in the fields; and to confrontations between the Mennonites and their two declared foes, who are actually responsible for fostering and even enforcing almost all the hostility of the villagers towards the weird-looking and -behaving strangers.
Moreover each of these two villains is driven by his own clearly-outlined motivations, and their interests and actions are not fully aligned, which makes the story even more interesting and convincing.