Closing arguments are set for Thursday in the murder trial of the Chicago cop accused of shooting a teenager 16 times in 2014.
The defense has rested after Officer Jason Van Dyke took the stand to explain his actions when he opened fire on Laquan McDonald, as McDonald walked down a Chicago street carrying a knife. Van Dyke says his actions were justified as self-defense, because he feared McDonald would lunge at him with the knife. He says he kept shooting after McDonald hit the ground in an attempt to get him to drop the knife.
Prosecutors say Van Dyke used excessive force without justification. The trial has been going on for nearly a month.