We have a pretty good sized Russian enclave in our area. No problems I know of. At least compared to the Muslims and illegal Hispanics here who are totally undesirable.
We have a neighborhood in Pittsburgh that had become “ghetto Amish” and downright dangerous.
In the past few years a bunch of refugees from Nepal have moved in. They are quiet, Hindu, peaceful, and they all appear to have jobs. They have opened many small shops and restaurants, etc.
In reality an improvement over the prior residents.