not all Muslims are violent to say they are is ridiculous. However there is some who do believe in the extremism but a minority should not represent the majority. People need to be integrated into society when Muslim communities get isolated from everyone else that's when extremism grows look at Holland and France. Germanys problem is they let over a million people in a short period of time very hard for security to manage the situation merkels fault the majority of the migrants will have good intentions it is sad but there is always going to be that bad people who come through if you are not sure who is coming into your country your very vulnerable.

The UK is stronger than most in Europe when dealing with extremism secret services and security strong and Muslims here are less isolated than elsewhere in Europe there is however exceptions to that. Norway are doing it the best they have a de radicalisation programme any younger guys they find has extremist beliefs they send to these prisons/centres and don't let them leave till they lose there extremist beliefs