Monday marks three years since Jordan Davis' death . For his parents Lucy McBath and Ron Davis, it has felt like an eternity.

Davis, a black 17-year-old student, was fatally gunned down at a Florida gas station by Michael Dunn, a 47-year-old white man who fired shots during an argument over loud music. Dunn was convicted of first-degree murder last year and sentenced to life in prison.

Davis' parents have teamed up with HBO to release a riveting film Monday titled, "3 1/2 Minutes, Ten Bullets." The film depicts details of the shooting, portrays the drawn-out trial and discusses the role bias and stereotypes play in society.