That would be the same religion of peace practiced by all of the hijackers who killed the people this memorial is supposed to be memorializing. This would be somewhat like having a Holocaust Memorial for the Jews, which coincidentally took the shape of a swastika, or maybe having an eternal flame on the grave of Emmitt Till, that coincidentally looked like a burning cross.
People are fighting back.
And speaking of remembering 9/11:
Rick Rescorla, a hero of the Vietnam War (here shown in the Ia Drang Valley of "We Were Soldiers" fame) who was also a hero of 9/11, and died saving others
Powerline posted a nice article about Rick Rescorla, who was one of the 3,000 Americans killed on 9/11, and who is particularly worthy of remembrance.