Now, this distinction is natural enough and often moral enough, but it can go awry, and this was part of the research of the great social psychologist Henri Tajfel.
这些区别是自然而然的 时常也是道德的， 但有时也会出错， 这是伟大的社会心理学家 亨利·泰吉弗尔研究的一个部分。