Dylann Roof's confession and journal detail racist beliefs

Prosecutors are using Charleston church shooter Dylann Roof's own words to portray him as a cruel angry racist at his death penalty trial.

Roof's two-hour confession to killing nine black people at a church Bible study has been introduced as evidence, along with a handwritten journal found in his car when he was arrested.

The videotaped confession shows Roof laughing several times and making exaggerated gun motions as he describes the massacre inside Emanuel African Methodist Episcopal Church in June 2015.

Roof's trial continues next week. His lawyers conceded his guilt, but are trying to spare his life.