Pavlo’s Reviews > Behave: The Biology of Humans at Our Best and Worst > Status Update

"There is often an inverse relationship between levels of intragroup and intergroup aggression. In other words, groups with highly hostile in- teractions with neighbors tend to have minimal internal conflict. Or, to spin this another way, groups with high levels of internal conflict are too distracted to focus hostility on the Others."
Resonates with "how democracies die" segmentation