Teach your dog to hate negroes. My neighbor had a german sheppard pup. This black guy who was a friend of the dad would be real rough with the puppy, to the point where the dog would be afraid of him. The black guy moved away but those memories remained with the dog as he grew up. As a full grown, any time he sees a black person he goes nuts, like throwing a T-bone in front of him.
They actually felt bad about it and embarassed because they can't hardly take him for walks or to the park because he will go nuts every time. They even tried to get doggy help for him but no luck so they got him put down. I was pissed. Would have loved to have him as my pet, especially since he was already trained to stop criminals.