Story highlights Stonewall Jackson and Robert E. Lee are in stained-glass windows in the National Cathedral

The windows were installed in 1953 at the request of the United Daughters of the Confederacy

Washington (CNN) The nationwide backlash against Confederate symbols continued as the dean of the Washington National Cathedral called for the venerable church remove imagery related to the secessionist states.

The Confederate flag is featured prominently in pictures apparently posted by Dylann Roof in online writings laced with racial hatred. Roof has been charged with murdering nine people at a Bible study in Charleston, South Carolina, on June 17.

The image on the left includes Stonewall Jackson, a Confederate general. On the right is Robert E. Lee.

In his sermon on Sunday , the Very Rev. Gary Hall, dean of the National Cathedral, announced that he would call on the church's governing body to remove two stained-glass windows put in place to honor "the lives and legacies of Confederate Generals Stonewall Jackson and Robert E. Lee."

The windows were installed in 1953 at the request of the United Daughters of the Confederacy and are two of many stained-glass bays on the cathedral's main level.

Hall said the National Cathedral had installed these windows to "foster reconciliation" between the North and the South. But they did did more than simply seek to repair a divided nation, he said.

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