They’re trying to build middle-class lives in New York. But many 30-year-olds in the city feel worse off than their parents. Is it average adult angst? Or something more enduring?

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Luiz Inácio Lula da Silva, the leftist incumbent, and Flávio Bolsonaro, the right-wing challenger, face off in a narrow race that could redefine the future of Latin America.

© Adriano Machado/Reuters