A mission even the most cold-eyed capitalist and the most warm-and-fuzzy global citizen can agree upon: microfinance to the underdeveloped nations.
Check out Kiva.org:
Fantastic group of startups that wanted to create a "banking system" for small entrepreneurs in underdeveloped nations that otherwise have little or nor access to capital.
We enjoy great prosperity by virtue of the system of plentiful capital, private enterprise, and an entrepreneur-supporting market. If you think the way out of poverty is ownership, investment, and capital, put your money where your mouth is and be a "banker to the poor".