communist culturesAlso Buddhists don't believe in god. Many Japanese people believe in a number of gods, as do some Hindus. Many indigenous tribesman of both the great plains of America and Australia...
The only group I can think of to renounce technology (which is a concept which would technically not allow them to use fire, knives, or even hammers) is the Amish.
The truth is that there is no such thing as American culture, you might be offended by this but is true. Your culture is pretty much a mixture of other cultures. You consider McDonald's your national...