Cruelty -
callous indifference to or pleasure in causing pain and suffering.
History has been marred with many cruel acts.
Scientists believe that there were battles fought by Neanderthals, which lasted 100,000 years, where heads were bashed in with clubs, and where javelins pierced body...
An unfortunate part of organized society is that a few of its members will have their lives ended unnaturally by others. Not every killing is the same as another, and secular society provides for circumstances where it is more acceptable to kill another, or at least, won't punish as severely...