Conservative propaganda?
I am not saying it is, but this movie sure could be interpreted as a right wing propaganda intended to convince us that all hippie communes are dangerous cults whose members rape, murder and how good traditional Christian families are in contrast. People who live in communes don't want to work so they steal, they are psychologically *beep* up, while businessmen like that British guy are loving and responsible.
If the group Martha was part of, was portrayed more like a religious cult, I would understand, but it shows no religion, indoctrination, nor is there a big emphasis on the leader. It looks more like just a commune.
I am not saying that those things do not happen among some communes, but the causes are debatable, and we know a lot of people in USA particularly conservatives think that way.