The term 'Lambda Followers' refers to two distinct groups of people. The first group is the MUS, which stands for 'Movimento Universitario Siciliano', a student movement in Sicily that was active from the late 1960s to the early 1970s. The second group is the MUNU, which stands for 'Movimento Universitario Nazionale Unitario', a national student movement in Italy that was active from the mid-1970s to the early 1980s. Both movements were inspired by the ideals of the Lambda movement, which was a left-wing political movement in Italy during the same period.