Yesterday a video surfaced of white police officer Jason Van Dyke murdering black 17-year-old Laquan McDonald. This occurred in October 2014, but the appearance of the video has sent Chicago into a frenzy of outrage and protest - quite understandably.

Van Dyke has been charged with first-degree murder. He shot McDonald 16 times, which was captured by the police car's dashboard camera.

Protesters took to the streets following the release of the horrifying video. Vic Mensa was one of them. "We want justice for Laquan and we want justice for our people," he said, also explaining how a police officer had laid hands on him during the course of the protest. Watch a video of him speaking below; Chance the Rapper also offered his support.

"It is fine to be passionate but it essential to remain peaceful," said Chicago mayor, Rahm Emanuel. "It is now the time to come together as one city, show respect for one another."