On the way to retake The Holy Land during The Third Crusade (1189-1192), King Richard I and Philip II took the time to take the town of Acre (Akko), a port on preasent-day Israel's northwest coast.
They held roughly 2 500 to 2 700 civilians hostage and then Richard just killed them, children and all, alike.
After Richards brutality at Acre, Saracen mothers for many years would quiet and frighten children by telling them if they did not behave 'Richard would come for them'.
Good King Richard the Lion-Hearted. :-)