In the OTL, Hippie Communes fizzled out. The members either did not find a way to make them successful and/or simply got tired of the life style and left to return to mainstream society. The Challenge is to make Hippie Communes last longer, be more successful, and be more plentiful. To make it sort of like Free Love Amish in American culture at large, if you will, not necessarily in technology or social makeup, but in its relation to society at large.
Likewise, how would the Communes be treated within American by law, culture, etc?
This challenge is partially because of a thread I did on the Hippies surviving an Atomic War (in their Communes), and partially because I have an idea for part of a TL.