'Forbidden America' follows Louis Theroux's familliar template, travelling to meet strange, often troubling people and letting them tell their own stories, for good or ill. One problem with the model is that his interviewees are often very aware of the context within which they operate; which makes the documentaries less exploitative, but also more perfomatative; the subjects all have their own reason for appearing. In this series, he meets violent rappers, white supremacists, and workers in the porn industry. At least two of these are familliar subjects for Theroux, and he's arguably more directly judgemental here than he has been hitherto. In places, the series is insightful, but as human beings, his protagonists aren't always that interesting, even though their societal role may be: they often come across as narcissitic and opportunistic grifters, whose personalities don't take that long to dissect. There are always moments of interest in Theroux's work; but also limitations to the personal approach.