Some guys came from Hawaii to a surf competition in Rio. Between them was Byron Amona (the guy giving his point of view on the video, Mike Hu, etc).
One of the local dudes named Foca has borrow Malibu's board and hit, by accident, Byron's head. Byron got pissed and broke the board's fin.
Malibu got pissed his board was broken and he was good friends with Rickson. Next day they were on the beach again and the Hawaiian guys were there too, so Rickson told Malibu to make the first move but he was hesitant. The Hawaiians left the beach and went to Rico do Souza's house (another local surfer) and Relson Gracie told Rickson - "I told you, they didn't trust we'd handle the situation, you shouldn't help out these guys", so Malibu told everyone to pay them a visit at Rico's house.
When they got there, everyone were on the backyard but their boards were in the front so Malibu got Byron's board and brought back to the front of the house and the crowd that was with him (about 17 people) started breaking Byron's board. Byron heard the noise and all the Hawaiians came check it out.
He got there and saw his board destroyed and told Rico someone would be hurt for that. Rickson stepped up and said the only words he knew in English back on those days "F**k you, I'm gonna break your face".
Byron agreed to a 1 on 1 with Rickson and as everyone opened a big circle. Rickson blocked some punches and got his back while he was standing. Byron blacked out and felt. Rickson let it go the RNC and started punching him... He oxygenated and woke up then Rickson got him on a RNC again and got him out again. Relson's telling Rickson at all time to keep the RNC tight.
People broke the fight and Byron ended with two cracked ribs, internal bleeding and a purple eye.
Some days later Rickson and Byron happened to be at a surf party on a famous local Hotel and Byron came towards Rickson and said that before he returns to Hawaii he'd hurt Rickson. Rickson went home and spoke to his family about what happened during dinner with Helio Gracie and his older brothers. They then went back to Byron's hotel and Rorion, who would speak English well, went to have a chat with Byron and told him that if he wanted to fight Rickson again, just come outside to the beach and they could kill each other on one on one BUT if he touched the "boy" or anything bad happened to Rickson as far as ganged him up with other friends or any other coward attitude towards him, that he wouldn't be able to get back to his country because he'd be buried on the local cemetery.
Sorry that English is not my first language, but maybe you can get and idea of what was told. Cheers