President Obama’s endorsement of gay marriage on Wednesday was by any measure a watershed. A sitting United States president took sides in what many people consider the last civil rights movement, providing the most powerful evidence to date of how rapidly views are moving on an issue that was politically toxic just five years ago.

Read more in The New York Times: http://www.nytimes.com/2012/05/10/us/politics/obamas-watershed-move-on-gay-marriage.html?_r=1&hp