The question is can such widely used video surveilance impede giant liberties.

问题是这种广泛使用的视频监控阻碍自由。

Minnesota, civil, liberty union excutive director Charle Samuson says he realized the private surveilance camera were used by boston authorities to indentify the two suspect in the marathon bombing a week ago.

明尼苏达民间公司自由联盟执行理事查理·西蒙斯表示他意识到波士顿当局使用的私人监控摄像机一周前帮助鉴别马拉松爆炸的两名疑犯。