Individuality is a necessary condition of morality. When you embrace tribalism based on race, gender, and sexual orientation as the Left does, you inevitably end up embracing a tribal mentality as well. Everyone in your tribe is on "your side” and other people are viewed as "enemies." Most people don't apply the same ethical standards to their enemies as they do to their tribe. That's why we're fine with sending Predator Drones to kill terrorists in Pakistan, but we would riot in the street if the same policy were put in place to target people accused of murder in New Jersey. The more liberals split us into groups, the more hatred and situational ethics inevitably occur as a result.