'Tribalism' is healthy — and America should embrace it

Somewhere between the 10,000th think piece about polarization and the hundredth talk on bridging divides, a strange consensus formed: Tribalism is democracy's deepest disease, its most persistent poison.Professors and pastors warn of it. Columnists mourn it. Podcasters monetize their mourning. The diagnosis is always the same: Humans clustering together with their own kind is dangerous, primitive, a malfunction of the civic mind.The people most loudly condemning tribalism tend to be surrounded b...