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Kirk Smalley and his wife, Laura Field, of Perkins, Okla., and Sirdeaner Walker from Springfield, Mass., listen at the Conference on Bullying Prevention in the East Room of the White House on Thursday. The couple's 11-year-old son, Ty Field, committed suicide after reportedly being bullied at school, and Ms. Walker's 11-year-old son, Joseph Walker-Hoover, also committed suicide, hanging himself from a third-floor banister after being picked on at school in spring 2009. (Associated Press)

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