The D adds I see coming out of Chicago are all targeted to the kooks, but remarkably they are not racist since they must think there are not enough black voters to make a difference in the races being contested. I can only imagine the kook adds that target blacks, maybe they do on their racial media but on broadcast TV the adds are aimed at the KosKid type
The Dems have also come close to perfecting their knock and drag technique for Black GOTV. They don’t need as much paid media when it’s much more cost effective to deploy local canvassers/community organizers into the higher denisity urban areas where most Black live.
See the PJ Media on Catalist. It has some good charts showing Return on Investment for mobilizing base elements.
That doesn’t mean that there aren’t some token race-baiting ads (like Grimes is running in KY now), but that paid media is being tailored to other, harder to reach groups (like single women) or to convince the Party faithful in general that their candidate is still putting up a fight.