In an effort to understand some of the group dynamic factors inherent
in today's unprecedented increase in youth gang violence, the larger,
well organized gangs of the 1960's, were compared with the contemporar
y crowd-like, small packs of street youths. A hypothesis is advanced t
hat the combined processes of de-individuation and of group contagion
underlie many of the violent acts, so rampant in inner-city areas.