Which annual gathering that takes place at Black Rock City did Further Future want to change the  "vanish and leave no trace" principles instilled in those who participate in it
Burning Man Burning Man is an annual gathering that takes place at Black Rock City—a temporary city erected in the Black Rock Desert in Nevada. The event is described as an experiment in community and art, influenced by 10 main principles: "radical" inclusion, self-reliance, and self-expression, as well as community cooperation, civic responsibility, gifting, decommodification, participation, immediacy, and leaving no trace.
Black Legion (political movement) The Black Legion was a secret vigilante terrorist group and a white supremacist organization in the Midwestern United States that splintered from the Ku Klux Klan and operated during the Great Depression of the 1930s. According to historian Rick Perlstein, the FBI estimated its membership "at 135,000, including a large number of public officials, possibly including Detroit’s police chief." In 1936 the group was suspected of assassinating as many as 50 people according to the Associated Press.