“Till” is the true story of Mamie Till-Bradley, written and directed by Chinonye Chukwu.

Mamie was the mother of Emmett Till, an African-American teen killed while on a trip from Chicago to Jim Crow Mississippi in the summer of 1955.

About two weeks after he goes missing, his mutilated body is found in a river. Though urged to hide Emmett’s body from the public, Mamie allows photos of his body to be shared so the world can see the ravages of lynching and racism.

She goes to the trial of J. W. Milam and his half-brother, Roy Bryant. She leaves the segregated courthouse before the verdict is read. She knows that despite compelling evidence and testimony, the all-white jury will acquit Emmett’s murderers.

After the trial, Mamie goes on to speak around the country about the evils of racism and lynching while helping to raise money for Civil Rights organizations.

Danielle Deadwyler gives a nuanced, powerhouse performance as Mamie.

She is able to communicate her pain, anguish, frustration and grief with a glance, a gaze and through tears — without speaking a word.

Deadwyler is a revelation in the role of Mamie Till-Bradley.