If you watch TV even casually, you will have noticed that a concerted effort to portray gays and minorities in a more favorable light has been made over the last few years, most notably since the George Floyd episode. This is all to the good, and works with most people. Elderly white people, however, grew up with a vision of black people as being lazy parasites at best; more likely, they were violent criminals coming for you and your property. These attitudes cannot be changed by a few commercials, and are political dynamite.
So when you see an avalanche of GOP commercials about crime, even in areas that are extremely safe, remember what the message really is: only the Republicans can keep these people—animals, actually—under control.