ive video of the trial of Chicago police officer Jason Van Dyke, who's accused of the 2014 murder of Laquan McDonald is being made available by WGN-TV. Van Dyke says he was acting in self defense when he shot McDonald 16 times. Dashcam video shows that McDonald was carrying a knife, but was walking away when he was shot. WGN will be streaming as much of the trial as Cook County Judge Vincent Gaughan will allow.