Building a community center isn't offensive, burning a holy book is.
But when people threaten to commit acts of terrorism to try and intimidate a free people, you hold the free people responsible and insist that they surrender to force.
In the Free World, we have the right to criticise religions, to draw cartoons of Prophets and to do what we want with books we own. No-one has a right to intimidate us into silence.
And if the President wants to defend a symbol, he can start by defending the flag of the Country he is supposed to be leading.