When I worked as a supply teacher in London the very 'best', most memorable class I taught was majority non white. Of the two most difficult classes I ever taught one was completely white and the other was mixed with high racial tensions between the different groups. The glaring difference between the 'best' and 'worst' was always about deprivation, never about skin colour.
I'm always confused by threads like these - are we talking about refugees? people who have been forced to leave their home or are we talking about immigrants, people who have come here to work? Surely they're two very different groups and are treated differently by the government? Or are we talking about illegal immigrants another group again? I think it's really difficult to have any kind of useful discussion when it's not even clear what's being discussed. Even the article jumps between using the terms refugees and immigrants.
The problem here seems to be that the people in the article are refugees that are arriving in Germany with probably very little, fleeing war and probably not able to speak German making it very difficult to find work. Of course they are going to struggle to integrate if they don't speak the language, can't work or work in low paid jobs. Of course they are going to stick with people who do speak their language and who have the same culture and beliefs they do. But this obviously can also lead to huge problems especially amongst the children who are caught between cultures, probably living in poverty, unhappy, vulnerable to exploitation and radicalisation.
It very messy and difficult and pretending it's not a huge problem is not helpful - I think I saw that 350,000 refugees arrived in Germany last year, the most since their open door policy in 2015 - and unfortunately this issue has led to a rise in the far right across Europe. I don't know what the answer is though and that's the problem, no one does. What do we do with the huge numbers of people that are being displaced across the world?