Petro surrounded himself with body guards and made his way into politics. He served nearly two decades in Colombia's Congress, where he earned praise for denouncing close ties between politicians and right-wing death squads. He finished fourth in the 2010 presidential election, then was elected mayor of the capital, Bogotá, in 2011.
In 2018, Petro again ran for president, losing to conservative Iván Duque. But under President Duque, drug-related violence has increased in rural areas, a national strike shut down major cities last year, and poverty has swelled due to the COVID-19 pandemic.
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