Brazil's right-wing President Jair Bolsonaro is overseeing a violent crackdown on criminal gangs and the police have been told to do it regardless of the dangers to innocent people who live in the favelas where the gangs operate.

Across the political and charity spectrum, people are questioning the tactics and the benefits of such an unregulated and unchecked campaign of violence.

Sky's Stuart Ramsay meets the drug gangs in the favelas of Rio de Janeiro and discovers how innocent people are getting caught in the crackdown.

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