Bolt perpetuated the myth of the arrogant, flagrantly disrespectful of their competition, black athlete to most if not all of the entire world.
While he may have run fast, and shown amazing athleticism, unmatched in any explosive event, he set back the sport of track and field if not entirely for his own actions.
The behavior he embodied was not one of sportsmanship expected on a track. It was more something I'd expect to see on a doped up Football field, a doped up, fake WWF match, or on a street corner.
This 22 year old is a grown man, he has run the 100 meter and 200 meter hundreds of times since he was young. He knew better, and to say he did not understand the setting is worse than wrong.
The worst thing he could have done was to celebrate before the end of his races in the manner he did, it marred what would have been an angelic perfect performance. Instead of transcending the sport and placing Bolt in the pantheon of Olympic Super Humans, he showed that he couldn't even compose himself for 9 seconds, not even 7. No, he couldn't respect his competition even that long.
He made us all look like gloating, selfish, disrespectful assholes.