threats of violence do not violate facebook’s community standards. it’s that simple. don’t look to them as internet police. they are not. they are a for profit business that makes money by exploiting people’s posts in order to mine data and manipulate users into buying products and services advertised on facebook. there is no higher goal for them.
in any event, your story has a lot of holes that make it less than credible. you get 2 thumbs down here.