When we come in contact with persons, objects, and situations that we find unpleasant, aversion arises: the desire to separate from, or destroy them as soon as possible.
When we come into contact with persons, objects, and situations that we find neither pleasant nor unpleasant, indifference arises: neglect for them, and the denial of our interdependence.
The more we care strongly about some persons, objects, and situations (‘loving’ or ‘hating’ them), the more we disregard all others. We are emotionally distracted, inattentive, confused.
Much harm comes from indifference. Our ecological crisis; our disregard for the enslavement, abuse, and slaughter of animals; and our disdain for the suffering of the poor, immigrants, ‘enemies’, criminals, etc., are clear instances of the massive harm occasioned by indifference.