Great to have you watching CNN STUDENT NEWS.
I'm Carl Azuz at the CNN Center.
This Tuesday, we're starting with an announcement by the U.S. Justice Department.
Yesterday, it said it was launching an investigation of the Chicago, Illinois Police Department.
The announcement came after days of protests in the city and the release of a video from October of last year.
That's when 37-year-old Police Officer Jason Van Dyke, who is white, shot and killed Laquan McDonald, a black 17 - year - old.
The teenager was armed with a knife and apparently had the drug PCP in his system.
The video shows him approaching and then moving away from police officers who had guns drawn.
Officer Van Dyke eventually opened fire, shooting McDonald 16 times.
Some of the police who were there said McDonald had approached and threatened Van Dyke before the shooting.
But last month, Officer Van Dyke was charged with first degree murder.
On November 24th, the video was released to the public and protests lasted for days.
Demonstrators accused Van Dyke of using excessive force and other police of dishonesty.
City reports released last weekend indicate that what police on the scene said appears to be different than what the video shows.
They also questioned why it took more than a year for the city to release the video and charge Officer Van Dyke.
They demanded that the police chief and the mayor resign.
很高兴您收听CNN学生新闻。
我是卡尔祖斯，从CNN中心发回报道。
本周二，我们开始报道美国司法局的一项声明。
昨天，司法局说开始调查伊利诺斯芝加哥的警察局。
声明宣布之前的几天，芝加哥发生了抗议，并且一份去年十月的录像被披露。
