Well a recent article in the NYT reviewed what it calls 'a growing body of literature' showing that those with social power not only empathize less with those who have less power, they don't even get to the first stage of paying attention to them! The author, Daniel Goleman, argues that to reduce the economic gap we have to also work on this empathy gap.
One of the ways to bridge that 'empathy gap' is bit by bit, via people who those with social power do pay more attention to. I understand much of international solidarity activism to work this way, and I find useful Galtung's description of this move as mobilizing a 'great chain of nonviolence.' He argues that nonviolence