After the mass shooting that killed nine in a historic African-American church in Charleston, families of the victims publicly forgave accused shooter Dylann Roof. But what role does forgiveness play for victims of violent crimes? And how does forgiveness affect those who perpetrate violence? Joy Cardin talks to a guest psychologist about these questions. Then, she talks to a columnist who argues that in the case of racist crimes, African-American forgiveness has been used as a tool to continue oppression. She discusses why she says black America should stop forgiving white racists.