Beyond the storefront churches and sidewalk bars on Rio's gritty north side, where the asphalt ends and dirt roads begin, Brazil gives way to Africa.
The sound of atabaques, or African drums, rises in the night air from a squat brick house, and a full-throated tenor sings incantations in the ancient Yoruba tongue of Nigeria.
Inside, children play quietly while women in swirling skirts dance in a circle, chanting to invoke the Orixas -- the gods worshipped by their African ancestors.
This is Candomble, a religion once banned in Brazil, now emerging into public acceptance while overcoming fierce and even violent competition.
ROAD TO ACCEPTANCE
Brought to Brazil by African slaves, religions such as Candomble, Tambor de Mina, Batuque and Umbanda long had to be practiced in secret, its deities disguised as Catholic saints -- the sea goddess Iemanja, for instance, who became the Virgin Mary.
But even after slavery was abolished in 1888, Candomble was still considered backward, if not blasphemous -- the province of the poor and dispossessed. Now Afro-Brazilian religions are flourishing across Brazil, even in the middle class.
''Candomble keeps growing because people are always looking for spiritual support. They are always going from church to church and back again. But when they get serious about Candomble it becomes a family affair,'' explains Mother Eliana, who runs one of the estimated 4,000 terreiros, or Candomble temples, around Rio.
''New terreiros keep opening up. It's impossible to keep track of them,'' said Ricardo Oliveira de Freitas, a researcher associated with the Superior Institute for Religious Studies, a Rio de Janeiro-based think tank.
Their strongest opposition comes from Pentecostal churches, which are also growing fast in predominantly Catholic Brazil. Since the 1980s, Pentecostals have attacked terreiros, throwing rocks and holding protests outside their doors. Preachers routinely rail against them, especially their ritual sacrifice of barnyard animals, calling it the devil's work.
Some believe the Pentecostals' attacks have strengthened Candomble.
LEGAL VICTORIES
In 2002, Candomble followers won two lawsuits for defamation against the Universal Church of the Kingdom of God, which published photos of them in its newspaper saying they were possessed.
''With the lawsuits, Candomble followers began to discover they have rights guaranteed under the constitution. This was a very powerful message for people who for years had to disguise their religion,'' said José Marmo da Silva of the group Ato Ire, which works to distribute health information in the terreiros.
Anthropologist Raul Lody, author of books on Candomble, says the Pentecostals have changed tack: ``Instead of attacking Candomble, some churches are incorporating some cult elements into their services -- not the complex rituals, but elements that will be familiar to those who grow up in the religion.''
Freitas says Candomble centers have a social appeal that many churches lack. ''At terreiros people eat, flirt and court. It's a religion that celebrates life,'' he explains. They have no problem ministering to homosexuals, prostitutes and others who have been marginalized.
Brazil has thought of itself as multicultural, but in recent years has come around to the realization that the lighter-skinned half of the population of 182 million holds the bulk of the nation's wealth and power. Over the past decade a black civil rights movement has been demanding benefits. President Luiz Inácio Lula da Silva said terreiros play a part, serving as centers of black consciousness where people learn about health, education and their civil rights.