In a study comparing Arabs, Israelisand South Americans regarding responses to the others’ pain and emotional suffering, authorsfound that, behaviorally, participants reported less empathy towards the respective group theywere in conflict with. Contrary to that, functional imaging results indicated less activation
Makes sense why this would happen and shows why there can be such horrible conflicts between some groups. Empathy for those people is literally decreased in your brain due to less activation. I wonder if this is universal or not.