We’ve been exposed to a contagion.
It’s manifesting in rampant anti-immigrant sentiment around the globe, and no border wall is going to contain it or stop its spread.This
Politics 
Spencer Platt/Getty
Uh-oh: You’ve Caught a Case of Xenophobia
Pandemic
Fear is a powerful social contagion from which no one is entirely immune. And it spreads rapidly when authority figures exhibit its symptoms.
opinion
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