rodney:
I guess this was the 70's, and I've never been to Rio, so I will assume this craziness could be typical...
I remember reading a story in about the late 1980s in which the Brazilian police were apparently pleased with themselves since the number of deaths in a recent carnival had been fewer than usual. Carnivals are supposed to be fun, not about death either accidental, on purpose or caused by drinking - or coup d'etats for that matter.
rodney:
what looks like buccaneer pirates (
Rackham).
They look more like musketeers to me. If Herge intended them to be pirates he's probably have given them more torn clothes and eye patches. But those two look more like d'Artagnan and Athos rather than Rackham and Sir Francis Hadoque.
What about the two Scots in kilts at the top of the panel? "Black Island", perhaps,
BTW, there are other famous faces on other pages, such as on page 59, in the fourth panel, when Colonel Alvarez says that they need a car, there is Donald Duck in the foreground; and, when the Picaros mount the float in panel 7, in the top left-hand corner is Groucho Marx.
On the next page (60), in the first panel with the float racing through the streets, on the left is Snoopy from "Peanuts". In the fourth panel, as the float approaches the prison, on the far right is what appears to be Disney's the Big Bad Wolf, but I can't be certain. Could be any number of wolves from hundreds of comics or may not be intended to be based on any character.