Cialdini raamat
the parallel findings in Phillips' suicide data, it is clear that widely publicized ag-
gression has the nasty tendency to spread to similar victims, no matter whether the
aggression is inflicted on the self or on another.
Perhaps nowhere are we brought into more dramatic contact with the un-
settling side of the principle of social proof than in the realm of copycat crime.
Back in the 1970S, our attention was brought to the phenomenon in the form of
airplane hijackings, which seemed to spread like airborne viruses. In the 1980s,
our focus shifted to product tamperings, such as the famous cases of Tylenol cap-
sules injected with cyanide and Gerber baby food products laced with glass. Ac-
cording to FBI forensic experts, each nationally publicized incident of this sort
spawned an average of 30 more incidents (Toufexis, 1993). More recently, we've
been jolted by the specter of contagious mass murders, occurring first in work-
annaabi.ee 
