Basically the song implies that we aren't born prejudice. We have to be taught to hate.
Parents can teach hate by being overt - hate speech, discriminatory actions, etc.. But some teaching can be very subtle -parents might not even know that they are doing it.
Holding their kids hand just a little tighter when they see a certain type of person, crossing the street when they see a certain person, etc..
Our dogs probably aren't in any danger of becoming prejudiced, but we can inadvertently teach them to worry about people or other animals.
We might grip our leash a little tighter when we see children or other dogs. We do this because we are concerned that our dogs will react. But tightening up on a leash can actually cause a dog to react.
The tight leash can make the dog feel trapped and uncomfortable.
Additionally, if we are worried, our dogs will know. And they will begin to think that if Mom/Dad is worried, there must be something to worry about.
Our dogs will even notice when he hold our breath or stiffen.
Email questions or comments to firstname.lastname@example.org Replies might be shared on this blog but names will be changed or left out.