Marilyn Manson's music was cited as a motivation in the Columbine High School massacre (ref. ).
By whom? GWO
The citation of Marilyn Manson's music as a motivation in the Columbine High School massacre was made by one or many non-psychologists with a tendency to blame effects (listening to Marilyn Manson as a result of feeling alienated) as causes, and also an incomplete appreciation for freedom of expression.
Among the non-psychologists who publicly mentioned Marilyn Manson in connetction with the Columbine High School massacre was Senator Joe Lieberman.
Marilyn Manson's music most likely had nothing to do with the Columbine massacre, since Eric Harris and Dylan Klebold didn't listen to him. Attempts to blame him for it is most likely hysteria.