What causes unprovoked acts of violence? And is there any place for such cruelty in our society?
His name has become a byword for deviancy and sexual cruelty. But Sade has also provided creative inspiration for generations of writers and artists.
In early 20th-century Australia, a series of highly publicised murders of women saw newspapers widely discuss sadism.
Donald Trump seems to have a passion for cruelty, often publicly celebrating his investment in violence as a source of pleasure. Those tendencies represent symptoms of a broader American sickness.