Very few, if any, of the believes in the teaching of Mohammad the founder of Islam want to assimilate into the culture if any other country society, and that is FACT,. for that would mean that they would not be able to live by the laws of their belief which is known as Sharia Law, If they do not follow Sharia Law then they do not practice their teaching and that makes them subject to the penalty of death.
Now as bad as that is these same people also believe that everyone else in the country that they live in must also follow their Sharia law or then also must be killed. So you can see what when you have a lot of Muslims in a county you also have a lot of killings and rages — is theis what you really want?