Your post is meant facetiously, but there is more truth in it than you know. The Democrats absolutely require the presence of a large minority underclass. Without such an underclass there would be no need for welfare, Affirmative Action, Obamacare, and so many, many other big government entitlement programs.
The one thing that would destroy the Democrat Party would be the elimination of poverty, unemployment, fatherlessness, homelessness, and genuine independence of all the people. That's why they work so hard to keep the underclasses in bondage.