If people are not inclined to commit murder, they will not murder. In the bible story, Cain Murdered Abel, Abel was a nice guy, Cain was jealous. Ok, many People murder for jealousy today, I saw that as a Constable in a small nation, sad, oh, a Country with strict gun control, so People use long ice picks or skewers or daggers they have made by a blacksmith, since they still use horses.
