PETA's new “Glass Walls” exhibition—which takes its name from Sir Paul McCartney's poignant quote, If slaughterhouses had glass walls, everyone would be vegetarian – is making its national debut on the National Mall, and celebrating its arrival in Washington is civil rights leader and D.C. Congressmember Eleanor Holmes Norton, who, along with PETA President Ingrid E. Newkirk, will launch the exhibit on Wednesday.
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