I wouldn't classify all Muslim immigrants into this category though. There are many who are well assimilated, wealthy, educated and very worldly - especially the Turks who have been in Germany since the 70s. The new wave of migrants though... Not as much although many of them speak English rather well. I do question why there is a disproportionate amount of men to women and why many of these men wear the same $100 Italian t shirts as I do while clutching a $500 cell phone.. One of my good friends and former coworkers Saad is from Pakistan and he came here like 6 years ago and is around my age (meaning he came in his late teens early 20s). He speaks perfect English and is only religious when it comes to holidays. His situation is a bit different to most pakis though - his dad worked for the British government so his family was far wealthier and rather bubbled. Anyway, he's actually very critical of the paki government and the populations support of extremist mullahs and such. You have to realize in many of these countries the people have little to no education so when some imam tells them the crusaders the Zionists and all kuffars are the source of their problems, they believe it.. Some still hold onto these beliefs even after they come to Europe but many recognize that their new European home is different than their own. There's pros and cons to everything. The bottom line is that these migrants left their homes in Iraq syria Bangladesh Eritrea Ghana wherever for Europe and stayed there. They wouldn't of done that if the pros didn't outweigh the cons.
As far as alienation and injustice, I don't think that Muslims are treated by government institutions much different than any one else. If anything many governments have taken priority to help the migrants especially with housing more so than the local natives. For example in Germany the government kicked out elderly renters and also rented out a 4 star hotel to make room for migrants while in Sweden the government rented a cruise ship to house migrants. In another scenario, migrants were housed in some out of use palace with fine furniture and oil paintings but yet they complained about the slow internet - which is free I may add. In another scenario, migrants have actually gotten away with some pretty bad things so the government and police doesn't appear racist. One example is the whole case of mostly Pakistani men that had kidnapped and sexually abused children over a span of years and years in the UK. Apparently child services and police knew about this but didn't want to intervene till it got very serious so as to not be perceived as racist. Unfortunately that's the world we live in now - you can have the best intentions and not judge people for things that they were born into and hence can't control but you still have to be careful not to say or do something that can be perceived as racist.
I don't think its the parents though who instill these extremist ideas once they arrive in england, france, etc but more so the imam who takes advantage of their situation. Its the same thing with gangs here - they go after the kids who are alienated, perhaps live in poverty, their parents aren't present to watch over them either because they're working or simply aren't too interested, etc. In both cases, they are gradually convinced to join something 'bigger than themselves' and seek a sense of family, camaraderie, etc. In places like Afghanistan its a little different - over there in rural areas some parents will give up their kid to become a jihadi or suicide bomber.
When people move to a new country they tend to first live in areas that have people of the same nationality, religion, etc. Its the same in the us - the new polish immigrants tend to move to the polish neighborhoods. In Europe well the Muslims tend to go to Muslim areas. Its simply easier because you're around your own people. The problems start occurring when there's terrorists, radical imams and neighbors don't speak out about it. Its the same thing here though in some Hispanic areas - everyone knows which gang runs which block because they're outside all the time and if there's a shooting and cops come no one will talk even if they know who did it.
If you want to know at which point there's too many migrants, its once migrants start saying there's too many:
youtu.be/Re4wpZ-NPgM]
For one i can tell you most Turks in Dortmund aren't too happy with all the new arrivals.
Personally, I just don't want Poland to fall victim to terrorism and to continue to have a polish majority with polish laws, customs and traditions reigning supreme. Were not going to allow people to march down the street with Sharia 4 Poland signs like has happened in uk, belgium, etc. We won't allow our women to be assaulted by anyone. We won't allow for people to set fire to police cars with no repercussions. In conclusion, we don't want to have the same type of headaches that germany, france, etc have. I'm all for helping people and if we are to accept migrants they must be vetted extremely carefully, provided with services to help them assimilate - I.e. employment agencies, language services, and have a social worker check up on them every so often to help spot issues of abuse, alienation, or anything else that could lead a person down a wrong path. Germany accepted way too many migrants in way too short of a time. If they carefully vetted who came in and provided them with assimilation services and also distributed them around the country so they're forced to interact with others and not just muslims or flooded majority Muslim areas like the special zones in France with police they wouldve had far less problems.