There is, not one, but two distinct Diaspora Jewries: 1) a politically and religiously conservative Jewry and 2) a politically and religiously progressive Jewry. The former is Orthodox; the latter is not. The two groups live in separate communities and rarely interact.
Very often, we take our status as members of the chosen nation for granted. We should remember, though, that we can lose that status by our actions. Born a Jew, always a Jew – but not necessarily Jewish.