Avoid the women working the street along Av. Atlântica in Copa. Some cruise the sidewalks while others stand at the end of parked cars in the street. Many are IV drug users, a fair number are transvestites, and high percentages are HIV+. Many of their customers find themselves robbed and beaten by a nearby pimp/boyfriend. Pick pocketing is rampant. If they approach you, head the other way. Just say no. Really! There’s also street action to be found on Prado Junior and in Praça Mauá, but the same caveats/warnings apply.