The document discusses personal reflections on belonging or being excluded from groups and feelings of powerlessness, hopelessness, or anger. It also summarizes research showing people more quickly shoot armed targets if black and don't shoot unarmed targets as quickly if white, processing stereotype-consistent targets more easily. It poses questions about whether we are trained to discriminate and how prejudice is learned from authority figures, and whether we can or should be colorblind. One reaction quotes judging people by what's inside, not outside.