Republicans need to have a plan to help minority communities participate and be successful in the American marketplace, and spell out this plan. School choice, vouchers, etc. are a good start, but aren't enough.
They need to tell these communities how they are going to address gangs, crime, safety of their children. They need to talk directly to these communities and tell them why it seems like the only jobs available appear to be at McDonald's etc. They need to come up with solid plans, like the availability of vocational training / trade school-type of training that will be part of a larger plan to bring back American manufacturing jobs etc., and then contrast that with Obama’s ‘let's send everyone to college on student loans’ rhetoric, even though current college graduates are having a hard time finding employment.
Those types of tangible plans will go a long way to diffuse the inevitable ‘Republicans are the party of rich white people’ rhetoric that the Democrats will not so subtly use.