Prosecutors lay out case against former deputy accused of killing Sonya Massey

Testimony is underway in the first-degree murder trial of a former Illinois deputy accused of killing a black woman in her home. And a warning, some of what we're about to show you is disturbing. Sean Grayson was captured on body cam video last summer shooting Sonia Massie after she picked up a pot of boiling water from her stove.It happened after she called 911 about a potential prowler. Grayson has pleaded not guilty, claiming he feared for his life and that he acted in self-defense. NBC News corresponden ...