HundrED.org has strategies to expand children’s horizons, including Roots of Empathy:
An incredibly effective way of teaching empathy is through asking children about the emotions and feelings of others, whether it’s how you treat a plant, animal or another person. This is one of the founding principles in Roots of Empathy. Through bringing babies into the classroom and having qualified individuals conducting the sessions, children learn naturally to imagine what it must be like for someone else to experience the world as they answer questions to do with the baby in front of them.