In context, it's the kind of immigrant who doesn't want to assimilate, but who would rather form a gang with friends from the old country. If you interpret tha

In context, it's the kind of immigrant who doesn't want to assimilate, but who would rather form a gang with friends from the old country. If you interpret that as being a codeword for Muslims, either you're projecting, or (too many) Muslims actually are that kind of immigrant. The US has this problem, too. Quite a lot of "that kind of immigrant" to the US are not Muslims.