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Usain Bolt retains his Olympic 100m title with the second fastest time in the Games' history
Usain Bolt retains his Olympic 100m title with the second fastest time in the Games' history

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    Watch crowds react to Usain Bolt's win

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Watch crowds react to Usain Bolt's win

Watch CNN's Becky Anderson, Linford Christie and crowds in London react to Usain Bolt's win in the men's 100 meter dash.

Watch crowds react to Usain Bolt's win

Watch CNN's Becky Anderson, Linford Christie and crowds in London react to Usain Bolt's win in the men's 100 meter dash.