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People que to lay flowers at Emanuel AME Church in Charleston, South Carolina on June 19, 2015. Police captured the white suspect in a gun massacre at one of the oldest black churches in the United States, the latest deadly assault to feed simmering racial tensions. Police detained 21-year-old Dylann Roof, shown wearing the flags of defunct white supremacist regimes in pictures taken from social media, after nine churchgoers were shot dead during bible study on June 17. AFP PHOTO/MLADEN ANTONOV        (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
People que to lay flowers at Emanuel AME Church in Charleston, South Carolina on June 19, 2015. Police captured the white suspect in a gun massacre at one of the oldest black churches in the United States, the latest deadly assault to feed simmering racial tensions. Police detained 21-year-old Dylann Roof, shown wearing the flags of defunct white supremacist regimes in pictures taken from social media, after nine churchgoers were shot dead during bible study on June 17. AFP PHOTO/MLADEN ANTONOV        (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

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    Was racist manifesto written by Dylann Roof?

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Was racist manifesto written by Dylann Roof?

The website where a racist manifesto was found is registered to gunman Dylann Roof. CNN's Alina Machado reports.

Was racist manifesto written by Dylann Roof?

The website where a racist manifesto was found is registered to gunman Dylann Roof. CNN's Alina Machado reports.