The "Buttman" series, directed by John Stagliano, has a multi-decade history of filming during the Rio Carnival, often featuring "gonzo-style" footage. Major entries in this theme include: Buttman Goes to Rio 2 (Video 1991) - IMDb

While I couldn't find specific information about the 2021 event, Buttman Carnaval Rio remains an exciting and unforgettable experience for those who attend. If you're interested in learning more or planning a future trip, I recommend checking out official Carnaval Rio websites or social media channels for updates.

The "Buttman Goes to Rio" series, which began in the early 1990s, is known for its "gonzo" filmmaking style. Unlike traditional cinematic features, these films use a handheld, first-person perspective to document the nightlife and festival atmosphere of .