The latest dance-music craze in Brazil has stirred controversy because of worries about its effects on young people. "Baile funk" has followed the familiar path from Rio's impoverished favelas to trendy, mainstream clubs. Described as hard-core, not-quite-rap, it is introducing new words into the Portuguese language. The aggressive and sometimes violent dance moves associated with it, and sexually explicit lyrics, have prompted debate over whether funk is fomenting gang violence, abuse of women and sexual promiscuity.

In Little Slap, a singer tells her boyfriend, "A little slap doesn't hurt." Deputy Lara Bernardi says: "This culture of machismo is what we have spent years trying to fight."