Mass Killing
Abu Huraira reported Allah's Messenger (ﷺ) as saying: By Him in Whose Hand is my life, a time would come when the murderer would not know why he has committed the murder, and the victim would not know why he has been killed.
The killing of innocent children in today’s wars, shootings, and oppression is an example of this prophecy. Because often neither the killer has a just cause, nor do the victims understand why they were targeted.