Smithsonian Secretary: Museums Bring Us Closer By LIBBY CUDMORE • Special to www.AllOTSEGO.com COOPERSTOWN – One afternoon, while walking through the Smithsonian’s exhibit of Emmett Till’s glass-topped casket, Secretary Lonnie Bunch III saw a young African-American woman sitting on a bench, sobbing. “I was about to go over to her, but a white man approached her and said, ‘I’m crying too. Can we cry together?’ And they hugged. That’s what museums can do. Museums can help us come together, share…