This project has been planned on this property since long before 9/11. It's not only a property rights issue, it's a tolerance issue. Our tolerance of all religions, not just our favorite ones.
Besides, this has nothing to do with "sensitivity" and everything to do with intolerance, since mosque protests are springing up all over the USA. A Sac Bee article from last Sunday listed nearly a dozen such protests in the past few weeks. People are trying to justify bigotry, in my opinion.
That's not what our nation is about.