美国有线新闻 CNN 2015-12-10

 by the US justice department. Yesterday it said it was launching an investigation¹ of the Chicargo Illinois police department. The announcement came days of protest in the city and  release a video from Oct of last year.That's when 37 year-old Jason , who is white, shot and killed Lokwan Mcdonald,a black 17 year-old. The teenager was armed with a knight² and apparently³ had the drug PCP in his system. The video shows him approaching, and then moving away from polic officier who has gun drum. Officer Vandie eventually opened fire, shooting Mcdonald 16 times. Some of the police who were there said Mcdonald had approached and threatened Vandia before the shooting. But last month, officier Vandia was charged with first degree murder. On Nov 24, the video was released to the public and protest lasted for days. Demonstrators accused Vandia of abusing excessive force and other policeman of dishonesty. City reports last week indicate that what the police on the scene said  appeared different from what the video shows. They also question why it took city one year to release the video and charge officier Vandia they demanded the Police Chief and the Mayor resign. In this investigation, the justice department is trying to determine wether the Chicargo police had made a habit of breaking the law or violating the USconstitution.

Specifically we will examine a number of issues related to the Chicargo police department use of force, including the use of deadly force, racial, ethnic⁴ and other despiraty abuse force and counterbility mechanism⁵. To ask justice department to investigate that, the US spring court is also looking in an issue potentially involving race. It's about a race factor in Jewish election. A number of study found have that potential black Jewries are struk from cases higher rates than potential white Jewries.

Artical 3, section 2 of US constitute states that the trial of crimes shall be by jury. states the amendment⁶, the jury should be in partial , but could discrimination lies in ? challenges...

1 investigation   

n.调查，调查研究

参考例句：

• In an investigation,a new fact became known, which told against him.在调查中新发现了一件对他不利的事实。
• He drew the conclusion by building on his own investigation.他根据自己的调查研究作出结论。

2 knight   

n.骑士，武士；爵士

参考例句：

• He was made an honourary knight.他被授予荣誉爵士称号。
• A knight rode on his richly caparisoned steed.一个骑士骑在装饰华丽的马上。

3 apparently   

adv.显然地；表面上，似乎

参考例句：

• An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
• He was apparently much surprised at the news.他对那个消息显然感到十分惊异。

4 ethnic   

adj.人种的，种族的，异教徒的

参考例句：

• This music would sound more ethnic if you played it in steel drums.如果你用钢鼓演奏，这首乐曲将更具民族特色。
• The plan is likely only to aggravate ethnic frictions.这一方案很有可能只会加剧种族冲突。

5 mechanism   

n.机械装置；机构，结构

参考例句：

• The bones and muscles are parts of the mechanism of the body.骨骼和肌肉是人体的组成部件。
• The mechanism of the machine is very complicated.这台机器的结构是非常复杂的。

6 amendment   

n.改正，修正，改善，修正案

参考例句：

• The amendment was rejected by 207 voters to 143.这项修正案以207票对143票被否决。
• The Opposition has tabled an amendment to the bill.反对党已经就该议案提交了一项修正条款。