President Obama’s birth certificate (or purported lack thereof) has been a central piece of rightwing agit-prop, but at the Minnesota State Fair’s crop art exhibit, it’s now a piece of agri-prop. Artist Mark Dahlager glued thousands of seeds to a board to create a facsimile of the famous document, adding the tagline “Move on #&%?! Birthers.” (See full sized view at bottom of post.) Political themes have become a staple at the Fair’s crop art exhibit over the years, but Dahlager’s piece may break new ground by reproducing an actual government document. Why did he do it? “I actually had...