It’s interesting to note the Wikipedia entry on naturism. It states
“Naturism, or nudism, is a cultural and political movement practicing, advocating and defending personal and social nudity, most but not all of which takes place on private property. The term may also refer to a lifestyle based on personal, family and/or social nudism.
Naturism may take a number of forms. It may be practiced individually, within a family, socially or in public. Additionally, there is also militant naturism, including campaigning and extreme naturism is sometimes considered a separate category.”
Source: Nudism – Politics or Culture?