Philip Yancey writes in Christianity Today magazine:

I recently heard from a friend who visited a barrio in São Paulo, Brazil. He grew nervous as he noticed the foot soldiers of drug lords standing guard holding automatic weapons. They were glowering at him, a gringo invading their turf. "Then the chief drug lord of that neighborhood noticed my T-shirt, which had the logo of a local Pentecostal church. He broke out in a big smile: 'O, evangelicos!' he called out, giving us hugs. Over the years, that church had cared for the children of the barrio, and now we were joyfully welcomed."