Why do certain men kill the woman if she rejects him?

SeleneSecret

When this man's marriage proposal got turned down, he grabbed a gun and shot her to death. Why that reaction? Isn't a girl or woman in the rights to reject him for whatever reason whether it's for a date, to work with you, to be your girlfriend or even a marriage proposal?

Updates
3 mo
She has the rights to reject him without fearing for her life.
Why do certain men kill the woman if she rejects him?
17 Opinion