Symbols serve a purpose. We have the Statue of Liberty, the Lincoln Memorial, the Washington Monument, our flag. They're a shorthand way of expressing an idea, and they have a place in the lives of humans.
The Ground Zero mosque is a symbol of Islamic triumphalism, a giant middle finger extended to America. Most Americans recognize it for what it is, and all the PC talk in the world isn't going to change the reality.
If one convinces themselves of that.
Another way to look at it will be that it would become one of symbols of American Magnamity and Greatness.
Whole world can then understand what Freedom means and who Americans are.
Or it can reinforce Al-Qaedas Mantra that America is at war with Islam and here is the proof - they took down a mosque.