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Pablo Blazquez Dominguez/Getty Images; Evaristo Sa/AFP via Getty Images

Greta Thunberg is a 16 year-old environmental activist that has a habit of getting under the skin of world leaders with less than stellar records for their environmental policies.

Previously having drawn the ire of Russian President Vladimir Putin and President Donald Trump, Thunberg is now the target of Brazil's President Jair Bolsonaro.

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