RIO BRANCO, Brazil - As the sound of gunshots grew closer, Janderson Viera knew that the rival gang that had taken over his neighborhood was coming for him.
Running to his bedroom, he called the only lifeline he had left: the Rev. Arnaldo Barros.
"I want to convert," he said.
As gang wars drive Brazil's homicide rate to historic highs, evangelical pastors - long revered in…