Return of the Horseman (2)

By way of explanation he spoke of the great unsettlement of the previous century - the world wars, genocide and persecution. The escalation of conflict has stirred their bloodlust, he said. There are those in your world who believe that the only way to appease them is through sacrifice.

Sacrifice?

Yes, there is a belief that they can be manipulated through the breaking of taboos and what greater taboo could there be other than human sacrifice.