Those people behind the mosque have to respect have to appreciate and have to defer to the people of New York. The wound is still there. Just because the wound is healing you can't say 'Let's just go back to where we were pre-9/11.
If we take the generally accepted definition of bravery as a quality which knows no fear I have never seen a brave man. All men are frightened. The more intelligent they are the more they are frightened.