I think it's unfortunate that the media (TV, especially) gave as much coverage as they did on the 11th and 12th to the arab/muslim people who were celebrating in the streets (the way folks over here did when we bombed Hiroshima). There were, of course, many other arab/muslim people, as well as Americans who are muslim and/or of arab ancestry who were grieving along with Europe, Canada, the US, etc.
The racist attacks would have occurred without that, as they did in WWII, but I think the media fanned the flames of racial-religious-ethnic hostility.
Not only is this type of bigotry immoral but it threatens to turn our country into the type of terror zone we say we want to avoid.
As you folks are saying, we really need to take a firm and very visible stand against the harrassment of and attacks on Arab Americans (and others who are mistakenly thought to be).