If you do any social justice work (and even if you don't), the statistics in this video are startling. Also, the book, Half the Sky: Turning Oppression into Opportunity for Women Worldwide by Kristoff and WuDunn is a must-read resource!
“Women are half the world’s population, yet they do two-thirds of the world’s work, earn one-tenth of the world’s income, and own less than one per cent of the world’s property.” (Source: World Bank) Let’s change that!
Half the Sky Movement: http://www.halftheskymovement.org/
And, in case you don't think this happens in the United States, read this article about Oklahoma. http://thestar.com.my/news/story.asp?file=/2012/11/4/nation/12170205&sec=nation
