Answering Muslims have a great post on this issue, explained by the video below.
Answering Muslims is actually a fantastic site which has a great perspective on all issues Islamic and anti-Christian that I have seen so far.
I have to admit, Muslims have a great racket going. When they commit violent crimes against the Kuffar in Western nations, any attempt at applying the law is ‘Islamophobia’ or, ‘racism against Arabs’. While when Muslims commit violent crimes against non-Muslims in Islamic lands, well it is the sharia. It is lawful that these crimes be committed and perhaps even a religious duty to commit them.
If there are any non-Muslims left working in immigration boards in Europe and North America, please reconsider your admittance policies.