Those defending the Ground Zero mosque on First Amendment grounds might want to contemplate this, from Andrew McCarthy:
"Islam is a comprehensive political, social, and economic system with its own authoritarian legal framework, sharia, which aspires to govern all aspects of life."
In other words, it is not just a religion, entitled to religious freedom.
The imam promoting the mosque also has ties to the Muslim Brotherhood, an organization founded in 1928 and now worldwide.
Wikipedia says the Muslim Brotherhood's "General Strategic Goal for the Group in North America" makes the objectives clear: "The process of settlement is a 'Civilization-Jihadist Process' with all the word means. The Ikhwan must understand that their work in America is a kind of grand Jihad in eliminating and destroying the Western civilization from within and sabotaging its miserable house by their hands and the hands of the believers so that it is eliminated and God's religion is made victorious over all other religions."
If those promoting the mosque were "moderate" and sincere, they would accept offers of another site. But the real purpose is to have a symbol for all radical Islamofascists that they have conquered the site where the symbols of capitalism were destroyed.
It was to be called the Cordoba mosque, in fact, a clear reference to the area of Spain where a Christian church was turned into a grand mosque after it was conquered by Muslims in the eighth century.
When people tell you in advance they plan to destroy you from within and you aid them, you have no one to blame but yourselves.