Facebook allows highly targeted delivery of ads, and according to the Facebook Ad Library, the Rob Smith ad was directed almost exclusively at young men, some in their teens. It also targeted certain states: Texas, California, Ohio, Pennsylvania, Illinois, New York and Florida. All are large electoral vote states. It was not directed at Maryland voters. This looks like it is not only pushback against Trump being called a racist by mainstream media, but also working on male voters in big electoral states for the 2020 election.