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.Today’s sponsor:Green Mountain Coffee. Green Mountain Coffee is passionate about making a smoother tasting cup. Try it today with code TRYGMC.Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at slate.com/gistplus.Learn more about your ad choices. Visit megaphone.fm/adchoices