It remains to be seen whether social cohesion will prevail in Germany once the Syrian refugees have been there a while and possibly still living in barrack style accommodation with not a lot to do. I have no doubt some will really make a success of life there, just as the Ugandan Asians have here.
The long list of immigrants that have arrived at our shores have been quoted adinfinitum on GN, always starting with the Huguenots, who arrived in relatively small numbers, easily absorbed especially as their artisan skills would have been a great asset. Ditto pretty much wave upon wave since. They came, they assimilated, they thought Britain was a better place from whence they came. I'm happy to say some of my ancestors were among them.
Nevertheless, I think it is foolish to pretend of late, this has not always been the case, there are some sections of our immigrant population who have not assimilated, have brought customs that our contrary to our way of life which have been an ongoing problem. These practices were not around a relatively short while ago. For instance anyone on this site ever heard of FGM when they were growing up? There are certain customs that have been brought to Europe that are very retrograde, contravene our laws and have been an ongoing problem.
Germany might well be flavour of the month at the moment, but they have a lot to live down. The many horrors 20th century German governments inflicted on the people of Europe need to move further back into the annals of time before they can cover themselves in glory and correct me if I'm wrong anyone but did they not deny their "guest" workers citizenship?