Chicago police officer Jason Van Dyke, who is white, turned himself in this morning in order to be charged with the October 2014 death of 17-year-old Laquan McDonald, who is African-American.

Tonight, city officials will release video of the confrontation. Lawyers for the McDonald family say the video shows Van Dyke firing multiple rounds at McDonald as he lay on the ground, after Van Dyke and other officers confronted the teenager acting erratically and carrying a knife.

I am asking people who believe in prayer to pray for our city 48hrs of prayer Tues 6pm - Thurs 6pm Pray where you are, with us, for us #pray

— Corey Brooks (@CoreyBBrooks) November 24, 2015

Corey Brooks, pastor of New Beginnings Church of Chicago, tells Here & Now’s Meghna Chakrabarti that the Department of Justice has called him and other Chicago pastors to act as a buffer so that violence doesn’t get out of hand as people protest.