Obama's Capital Gains Bombshell

Barack Obama said in last night's debate that he would consider raising the U.S. capital gains tax rate from its current 15 percent to as high as 28 percent, as reported in this New York Times article. Hillary Clinton stated that she would not raise it higher than 20 percent.

Given that he is willing to nearly double the capital gains tax rate, I wonder why Obama seems to be the darling of much of the Silicon Valley set?