On the one hand, all the obama stuff seems to me just pandering.
As far as the insight about Luke above, Luke is often considered to be a reformist text, a text that protrays the ability of Christians to also be good Romans. It isn't a polemic against the Jews like Mark, it isn't an argument for Jews becoming good Christians like Matthew, and it isn't an apocryphal like John that hates Jews and Romans. Luke is better than neutral, especially when you combine Acts, which is really the other half of Luke. As if the audience is meant for the Roman who doesn't want to make waves, but wants to be recognized as a Christian and a Roman at the same time.
Interesting. The parallel is that you can be a good black Christian and still be a good black American. That assumes a lot, but still interesting.