I'm an Arab-American and I am thankful that the economy is doing reasonably well. If there were a depression, I'd be shaking in my boots for fear of being mobbed.
There is something that angers me profoundly about the people who probably executed the attack. They claim to be Muslims, even though the killing of innocent civilians is strictly forbidden by Islamic law (if you actually read it right) and they hinder the progress that millions of Muslims are trying to make in building bridges to other people. These few, a hundred thousand at the most, are giving a billion people, fully one-sixth of the global population, a really bad name, and putting a substantial number of them in a truly nasty situation, with the threat of hate crimes constantly looming.