President Donald Trump has overseen many shady deals, but New Yorker staff writer Adam Davidson thinks he may have found the most questionable one. Davidson says a Trump Organization hotel in Baku, Azerbaijan, links the president to some shady oligarchs as well as Iran's Revolutionary Guard, a shadow-government ideological group. Read Davidson's piece, "Donald Trump's Worst Deal."

Maria Konnikova has today's Spiel on the theory of trickle-down hate-speech.

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