A Florida man convicted of first-degree murder for fatally shooting a teenager in an argument over loud music outside a Jacksonville convenience store was sentenced Friday to life in prison without parole. The life sentence imposed by Circuit Judge Russell Healey was mandatory for 47-year-old Michael Dunn after prosecutors decided not to seek the death penalty. “Mr. Dunn, your life is effectively over,” Healey said. “What is sad is that this case exemplifies that our society seems to have lost its way.

Dunn was convicted of first-degree murder at a second trial in September after jurors deadlocked on the charge at his initial trial in February. Prosecutors say Dunn, who is White, fired 10 times into a sport utility vehicle carrying Black teenagers in November 2012 and killed 17-year-old Jordan Davis of Marietta, Georgia.