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Controversies of the 2012 Olympics

Prior to competing, Greek triple jumper Paraskevi Papachristou was sent home from the Olympics for a racially insensitive tweet. (Getty Images)
Michel Morganella of Switzerland's soccer team was dismissed from the Olympics for a discriminatory tweet against the South Korean soccer team. (Getty Images) (AFP/Getty Images)
Just days before he was scheduled to compete, British triple jumper Phillips Idowu has disappeared. Idowu was one of Great Britain's best shots at a track and field medal. (Getty Images) (Getty Images)

It wouldn't be the Olympics without controversy. Here are the top controversial moments of the 2012 London Games.