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How did Charleston shooter become radicalized?
Situation Room
CNN's Martin Savidge takes a look at the radicalization of Dylann Roof, the gunman in the Charleston church shooting.
02:04 - Source: CNN
Charleston Church Shooting Massacre 15 videos
charleston church shooting dylann roof radicalization savidge dnt tsr_00002118.jpg
How did Charleston shooter become radicalized?
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Dylann Roof
Chilling moments from Dylann Roof's trial
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She called 911 as killer reloaded his gun
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Dylann Roof fatally shot nine people at a historic African American church in Charleston, South Carolina last year.
Dylann Roof confession video
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Pastor: Charleston shooter 'pure evil'
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Dylann Roof in FBI video: I did it
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Dylann Roof confesses in video: 'I did it'
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Dylann Roof
Charleston church shooter assaulted in jail
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Dylann Roof fatally shot nine people at a historic African American church in Charleston, South Carolina last year.
Dylann Roof facing trial in church killings
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Victims' relatives forgive, urge shooter to repent
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Prosecutors to seek death penalty for Dylann Roof
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Charleston church shooter's friend charged
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Dylann Roof dash cam video
Friend of accused Charleston church shooter arrested
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NORTH CHARLESTON, SC - JUNE 19: In this image from the video uplink from the detention center to the courtroom, Dylann Roof appears at Centralized Bond Hearing Court June 19, 2015 in North Charleston, South Carolina. Roof is charged with nine counts of murder and firearms charges in the shooting deaths at Emanuel African Methodist Episcopal Church in Charleston, South Carolina on June 17. (Photo by Grace Beahm-Pool/Getty Images)
Church shooter shouldn't have been able to buy gun
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June 2015: Shooter's friend says Roof wanted 'race war'
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