>> Armed military entering a pacified slum in Rio de Janeiro, after one policeman was shot dead and another wounded just last week. Things like this aren't supposed to happen, not since authorities launched a pacifying police unit back in 2008. Every year since, the so-called UPP has been establishing themselves In Rio's most dangerous favelas punctuating violence for social integration.
But in the lead up to the Olympics and with tourism booming, police have been more ruthless and less welcoming.>> I'm reporting for Reuters from Rocinha, one of Rio de Janeiro's most developed favelas or slums. And even with police violence increasing by 60% from last June, that's 167 people killed by police in one year.
Some people here are pretty much inline with the presence of government authority. I spoke to one of them. Claude Jouesnier has lived here for many years and says he feels safer with the UPP.>> In the beginning it was really very scary, but after the UPP came in and settled inside the community in my humble opinion it got better.
We started looking at the policeman in a different way. Getting to know them and realizing there are people behind the uniforms.>> But not all residents are on the same page. Reuters Rio correspondent Brett Brooks investigated the resurgence in violence and says it all leads back to one incident in 2013.
>> In 2013, police abducted, tortured and killed a man here in Rocinha by the name of Amarildo de Souza. Today, 12 police officers including the former head of the police unit here in Rocinha have been found guilty and sentenced and are sitting in jail for his murder.>> With an innocent man killed, some residents turn back to the gangs for protection.
Most people in Rocinha believe the 2008 pacification efforts only had in mind the 2014 World Cup and this year's Olympics. And that a week from now when both are over, these streets will be back in the hands of drug dealers and police, their unwanted visitors.