The United Nations has declared October 17th to be The International Day for the Eradication of Poverty.
You might be interested in The Best Visualizations Of Poverty In The U.S. & Around The World or The Best Resources About Wealth & Income Inequality.
And if you want to teach about how to do something about it, check out:
The Best Websites For Learning About Civic Participation & Citizenship
The Best Posts & Articles On Building Influence & Creating Change