The call is an apparent challenge to Israel, which has brought in thousands of additional police to prevent clashes like the ones that have broken out sporadically in the city during the past two weeks.

VOA: standard.2009.10.08

What is useful is point to somebody and say, "You in the green sweater, call the police," and the psychological evidence is if you--if somebody's-- if I am wearing the green sweater and somebody asks me to call the police I will call the police. I'm a good guy.

有用的办法是，指着某个人说，“穿绿色毛衣那个人，快报警”,心理学证明如果你…,如果我穿着绿色毛衣,有人叫我报警,我会报警，我是好人。

耶鲁公开课 - 心理学导论课程节选