> Rap music, and particularly its subgenre, "gangsta rap," is probably the most controversial form of popular music to find its way into mainstream popular culture. Other genres of popular music, such as rock and heavy metal music (especially in the form of music videos), have been denounced by watchdog groups and others for their violent, sexual, antisocial, and sexist content. The controversial nature of rock and heavy metal lyrics and music-video visuals precipitated a body of empirical work over the past several years documenting their effects on
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