In October of 2014, a white police officer fatally shot a black teenager on the streets of Chicago. The shooting of Laquan McDonald was captured on video, and sparked outrage across the city. Chicago's top cop was fired, the local state’s attorney was voted out, and the feds were sent in to investigate the culture at the police department. Now, the police officer at the center of the shooting, Jason Van Dyke, is on trial for murder. WBEZ and the Chicago Tribune look at how Van Dyke and McDonald intersected that night, the alleged cover-up, and the long history of friction between African-Americans and the Chicago Police Department. Click here for more background on the trial, the video, and the people at the heart of this case.