James Von Brunn, who was charged Thursday with the shooting death of a guard at the Holocaust Museum in Washington, D.C., was a "birther," part of a fringe movement that doesn't believe that President Obama was born in the United States. Salon's Joan Walsh joins Rachel Maddow to talk about the danger of the "birther" movement.


This video is from MSNBC's The Rachel Maddow Show, broadcast June 11, 2009.


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