This sick concept is called Honor Killing. It's barbaric.

Honor killings are acts of vengeance, usually death, committed by male family members against female family members, who are held to have brought dishonor upon the family. A woman can be targeted by (individuals within) her family for a variety of reasons, including: refusing to enter into an arranged marriage, being the victim of a sexual assault, seeking a divorce—even from an abusive husband—or (allegedly) committing adultery. The mere perception that a woman has behaved in a way that "dishonors" her family is sufficient to trigger an attack on her life.[6]

[link to en.wikipedia.org]