[digdigdag]

Because it's in reference to "honor killings" that still take place in certain cultures.

[bandrami]

Familial violence against women, unfortunately, happens in all cultures. It gets called "honor killing" when it happens in a few of them.

[bluefirebrand]

Cultures where domestic violence is a crime are NOT the same as cultures where domestic violence is encouraged.

Cultures that have honor killings are the latter.

[plorkyeran]

No, it is not socially acceptable (or even expected) to kill family members because they've done something which brings shame to the family in all cultures.