To be honest, I haven't thought about the "how" of it too much. Jessica Wildfire has some really good examples, if you're looking for ideas.
Personally, no matter what approach I take, I'd always stress that wealth inequality is destabilizing society to the point it's becoming a threat to democracy. While I agree capitalism has given us unprecedented amounts of wealth, history has shown that when wealth disparities get too drastic, the poor will rise up. It's simply in the rich's best interests to reduce the wealth gap.