Consider the following antisocial acts: European soccer fans sometimes attack and bludgeon players and other fans; in the United States, members of the Ku Klux Klan (KKK) burned houses and lynched innocents; frenzied rock and roll fans trample one another, sometimes resulting in deaths. What do these situations have in common? They __________.
(A) represent the downside of social facilitation.
(B) demonstrate the tragedies sometimes caused by anonymity.
(C) represent an unexpected hazard of group cohesion.
(D) reflect mass actions caused by relative deprivation.