Sadly, most of these stories reflect what happens when you allow multiculturalism through nearly-free immigration of people that have completely incompatible cultures with those in the country accepting them. This has been an ongoing problem in much of the upper midwest where large groups of refugees were settled, happens regularly in areas with self-segregated immigrant populations, etc.
A country can only accept and convert a certain number of people at a time, otherwise they will isolate themselves from the locals and never assimilate the culture of their new country.
I'm happy with immigrants that assimilate, because without them I wouldn't have all the things I have now. I eat a variety of foods from all over the world, have expert chopstick skills, etc, etc, etc. The really quality immigrants to this country want to bring the best of their cultures and blend it with the culture of their new country. What's sad is when the natives wander into a place, everything is written in a foreign language, and all the other patrons look at them with disgust as if they don't belong there anymore.