This is a problem not only of the Democratic Party perhaps taking minority votes for granted at times, but also of a lazy media spoon-feeding the usual "vote for one of your own" tropes at minorities. This could also be applied to Christians who will only vote for straight white Christians, or men who vote only for men, and so forth. You don't hear much about the Jews or Muslims who voted for Christians, the men who voted for women, the straight people who voted for a gay candidate.
Perhaps we could just start being adults who vote for other adults, based on issues and perceptions of ability and integrity. That alone would change a hell of a lot in the political dynamic of this country, which seems to consist mostly of idiots telling screaming children what they want to hear.