Trump and the Convention of Black Journalists

I'm thinking that it might have been a strategic error for the Republicans to allow their presidential nominee to speak at the Convention of Black Journalists. While it's true that most of Trump's supporters are not going to be swayed from supporting him--regardless of what he says or does, some more moderate voters could take notice. Perhaps next time, the former president should be steered toward a less diverse demographic for his future speaking engagements. I must admit, however, that I am looking forward to any future presidential debates.