it's not irony, trust me. I'm from Brazil.

It's bad taste, plain and simple. This guy that created the "holocaust float" it's no Roman polanski (or any of the other holocaust, award winning, movie directors: pick your favorite)
He was trying to adress an important historical issue because there's an idea down here in Brazil that we should try to "teach" people something in every opportunity we have; almost as he was feeling guilty for all the semi naked girls and decided to talk seriuosly for a second.

Just like Tom Jobim once said: Brazil it's not for amateurs.

or Charles de Gaulle: Brazil is not a serious country. (He was right, i think)