 By the beginning of the 2000s, militant straight edge punks had largely left the broader straight edge culture and movement.In the 1970s, the punk subculture was associated with the use of intoxicative inhalants, substances such as model airplane glue that were inhaled for the intoxicating effect.In 1999, William Tsitsos wrote that straight edge had gone through three eras since its founding in the early 1980s.