Why not? As long as he tells them that, basically, Sharpton’s ideas are terrible and that Republicans are the party of freedom rather than slavery, I think it’s an example of going where the sinners are.
If he panders, well, that’s a different story.
I guess you didn't get the memo, either.... apparently it is an inherently bad idea to actually speak to the people to whom we'd like to offer a contrary opinion.
Much better to rely on the MSM to tell them what we want them to hear.