Caravansary

Migrant caravan crosses into Mexico (John Moore, Getty Images)

Just in time for the ghostly visions of Halloween, and the even more fantastic visions of Election Day 2018, an immense group of people is walking across Mexico, drawing our attention ever more as it draws ever closer.

It’s a group of travelers, a company, a crowd, a society, an army, an assemblage; a collection of refugees from Honduras, El Salvador, and Guatemala. Whatever you call it, the 7,000 people moving north have captured th...