Differing worldviews... where you did not expect
Strangely, I have found these days differing worldviews in people around me quite often.
Here in the Bay Area, or for that matter, many parts of the US, there's an eclectic selection of people living in one place - some are from North India, some from South India, some from east India, some from Western India, some from urban China, some from rural China, some from Canada, some from Mexico, some from Europe, some from african countries, some are Americans, etc. Because of this, people dont fit naturally into the society in general (some do, but many dont), and try to carry on differing worldviews for a long time! Since there are good number of people from all of these cultures, they dont need to change...they can prefer to have friends or spend their time with only their chosen ones. Since the American culture in cosmopolitan places like this (San Francisco, California) is anyway loose, it doesnt obligate you to anything, and you can get by with Americans by just offering the usual courtesy things... (sometimes, the differing worldviews cover that as well!)
This sustained variety of life sometimes makes everybody living here feel alien, and sometimes makes everybody feel at home.
Out of work life, differing cultures is usually fine..... but that does get it head out within office environment as well. The very way of getting things done starts becoming different, especially in companies which a lot of international population, and have had them for some time. This, I have found, sometimes actually delaying job work, and causing unnecessary friction. Like, some people like to write documents to get information transferred from one group to another, and some prefer to talk directly, some follow schedule, some do not, some give company more importance, some themselves, and some technology, etc