In an effort to get the idea of 'cultural sensitivity' across, if those who ascribe to the religion which a violent and extremist sect of same has killed thousands in a cold blooded act of Private War, then the answer to such extremism and outreach to the community is not a 'cultural center' 13 stories tall.
Actual 'cultural sensitivity' would involve a 13 story wall with the names of the victims of 9/11 on it and a small non-denominational area for prayer and meditation set up under it.
That is how you reach out to those who have suffered injury and a true demonstration of your willingness to give everyone sanctuary to reconcile themselves with that event and that loss.
America is used to that sort of 'cultural outreach': they are called Monuments To Our Beloved Dead.
To enshrine a memory you create a shrine for all and put the people who made the shrine down in tiny letters on a small plaque off to the side so as not to intrude on the memories.
That does take 'cultural sensitivity' to realize that.
Its lack is evident.