Reminds me of the time the Seventh Day Adventists showed up at my front gate. My collie who was an even-tempered old teddy bear (and had probably never seen a black person) spotted a black woman in the group and charged the gate. The group of four women jumped in their van and left.
I noticed, even before that incident, that dogs who have never been exposed to black people will usually react.
I noticed, even before that incident, that dogs who have never been exposed to black people will usually react. That has also been my observation, but then, dogs will often react to anything they are unaccustomed to. Try bringing a yard dog inside the house and turning on a ceiling fan sometime!