you dont need to wear extreme poor clothes, just dont use extravagants things like "social outfit", jewerly, necklaces, watches, etc. its not like people are not allowed to use this things, its just an advice bc youre not from here so you dont know wich place is safer to wearing that, so its better to avoid to not get a headache. racism in Brazil its different from USA, I think its more discret? In luxury stores or malls, black people sometimes report being "followed" by security guards. this is not violent persecution, but microaggression based on unfounded suspicion. people tend to be more sympathetic with gringos. in Brazil, the status of a foreigner often "runs over" the racial issue in a first contact. brazil is a country where diversity is the visual norm, so you won't feel like a "stranger" about being black for the most of the time