By Hakan Almerfors, Contributing Reporter
RIO DE JANEIRO - All guide books on Rio de Janeiro strongly suggest that tourists blend in to avoid problems. Phrases like "when in Rome" or "imitate the locals" urge visitors to change their behavior accordingly. The reason is humanistic in nature, as travelers to a city as culturally-specific as Rio can avoid known hazards by adding a touch of local flavor to their daily routines. Here's a crash course in Carioca norms to get you started.
Clothing: Although tourists are generally met with respect, there are elements in Rio society with . . .