External enemies can briefly unite groups that have been murdering each other.

Evidence

An external enemy also reduces conflict within a country. In January 1991, for instance, Pakistan was reported to be “awash in anti-Western polemics” which brought that country, at least briefly, together. “Pakistan has never been so united. In the southern province of Sind, where native Sindhis and immigrants from India have been murdering each other for five years, people from either side demonstrate against the Americans arm in arm. In the ultraconservative tribal areas on the Northwest Frontier, even women are out in the streets protesting, often in places where people have never assembled for anything other than Friday prayers.” — Samuel P. Huntington, The Clash of Civilizations and the…, 691

Categorization

• CANDY: The image of rival Sindhis marching arm-in-arm against Americans and women protesting in the Northwest Frontier is a striking, tweetable fact.
• XREF: connects to: Serialized classes coalesce into groups only through a common external enemy. — Fredric Jameson, Marxism and Form, 559