That's one of their weasel words. Its true in the vaguest stretchiest sense. As they don't believe guns and self defense are lawful, any use of them is murder to them.

And as they know murder implies unjustified and bad to common vernacular, it paints the story with Kyle as the one in the wrong.

Feminists taught me how word games work a long time ago, and they haven't changed that play because of how effective it is.