No, Not game over.Hebrews have overwhelmingly been the best boxers.

Rocky Marciano.
Hebrews came to boxing too late when it all has become toned down.
Besides, boxers, white and black make up 0.0000000000000000001 of the planet and they are not going to save anyones race, white or black.
One jet airplane with enough ordinance can take out every boxer to have ever existed in the history of mankind. Hope this helps.