Why did the DNC choose Obama over Hillary when majority of Democrat voters choosed her ?

Some people in the DNC did not want to see a woman as president. If you watched the primaries, the DNC and the media did a number on Clinton. They are trying the same with McCain (calling him racist) and baiting him, but he is not biting. Once the election is over, Bill Clinton will tell you exactly what they did to Hillary. The voters wanted her, but the DNC and the media did not. It seems they over road the voters, and they may pay dearly for that.