I am not entirely satisfied with the term “informal groups.” The terminology is borrowed from the Soviets; it is the term they use most frequently. Many of these informal groups are in fact very formal, they are very sophisticated with committees and subcommittees, agendas, charters, mechanisms for leadership turnover, for membership selection, and in a few cases, some of them are even registered with the State as officially registered unofficial informal groups. I tend to use the terms “social groups” or “social action groups.” Perhaps “unofficial groups” would be a better term.