http://edition.cnn.com/2016/07/29/politics/muslims-moment-khan/index.html
I reminds me of the fact that the United States is a salad bowl of race.
Though Donald Trump is claiming that Muslims should go away from the United States, German people incluing him are basically immigrants from Germany in 19Cs. People around the world gathered at the country for the pursuit of freedom. But now, he is pursuiting opposite concept of freedom only to get psychological sense of relief by getting rid of Muslims.
I think that prosperity of the United States is supported by ambitious immigrants. If the US were to lose its position as the place of American dream, the country would have no choice but to decline.