I don't believe it's possible to hurt another person without hurting oneself, an invisible hurt, a tear in the soul that allows the essence of one's humanity to leak out, like bleeding from a cut. Awareness of the loss might come infrequently or only in the dead of night or when staring at the bottom of a beer glass. But it almost always comes. A collective group can't hurt another collective group either without hurting itself. And I belong to a collective group that has hurt.