They don't seem to be an ethnic group so much as a marginalized social class, but some have suggested a connection with the word "Hebrew."

他们并不像是少数民族,而更像是边缘化的社会阶级，但有些人指出它与希伯来这个词有关联“

耶鲁公开课 - 旧约导论课程节选

Where--One of the big findings from social psychology, and we'll devote almost an entire lecture to this, that people have strong views about other races that they don't know about and that they don't know how to control their actions.

我们将来几乎会用一堂课的时间，来介绍一个社会心理学的重大发现，人们对其他的民族有极深的成见,但这些成见往往是他们自己无法察觉的,也是他们不知道该如何去控制的。

耶鲁公开课 - 心理学导论课程节选