Many were angered by her call, but some said the massacre changed their minds.
The Associated Press reached out to the writers of these emails and letters after the Republican governor's office released 10,000 pages of documents last week in response to requests for public records from last summer's flag debate.
Among them are poignant notes from flag supporters explaining how their thoughts evolved after a white man who celebrated the symbol was charged with gunning down nine black people at a Bible study.
"It's a tarnished, tattered image of the South," Hough said. Southerners who don't acknowledge that either don't understand the impact, or are "just lying about what it says to other people."
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In his letter, Hough said he was a graduate of The Citadel military academy who once loved "the Confederate flag, singing Dixie and defending our right to say the N-word." "I came to understand," he wrote, that "attaching southern pride to these relics of the past only served to solidify that the true beliefs of the south are the stereotypes of hatred, bigotry and racism."
"It wasn't the rebel flag," he said. "It was southern culture."
He said the hazing of a black Citadel cadet in the late 1980s made him realize that the symbol he respected could be harmful to others, and the church shootings made him even more convinced that it was time to let it go.