Mystery cults of Dionysos are attested to in Greece from the late Archaic epoch and expanded to Rome in Hellenistic times. They appear in two forms, the group (thíasos) of ecstatic women (mainádes) who celebrate their rituals in the wilderness outside the city and in opposition to the restrictive female city life; and the thíasos of both men and women that constitutes itself as a cultic association and celebrates inside the cities but preserves the ideology of a performance outside the city. The main goal in both types of cult groups was the extraordinary experience of loss of self through drinking wine and dancing; the mixed-gender groups often added eschatological hopes. The purely female thiasoi were led by a priestess of Dionysos, whereas the mixed-gender groups were often led by a male professional initiator. The most conspicuous trace of these initiations are the so-called Orphic gold tablets that attest to the expectations for a better afterlife.
Voluntary associations are attested already in early republican times, but they became important especially during the late Republic. Their role in street politics in the 1st century