Today is an historic day!
It's Karl Marx's birthday, Cinco de Mayo, and the official launch of President Obama's reelection campaign.
I know -- it feels like Obama never stopped campaigning, but today he's making it official.
To celebrate, let's learn a bit about the man who wants to be our president for four more years.
Obama's secretive past has a major impact on how he governs as President of the United States.
