sectarian dress code

Yuval Noah Harariの "21 Lessons for the 21st Century" を読んでいます。
Lesson 14 (Secularism)から引用します。

In contrast, there is no expectation that religious people should deny God or abandon traditional rites and rituals. The secular world judges people on the basis of their behaviour rather than of their favourite clothes and ceremonies. A person can follow the most bizarre sectarian dress code and practise the stranger of religious ceremonies, yet act out of a deep commitment to the core secular values.

イスラム教など厳格なドレスコードがあるのはよく知られています。 辞書で "sectarian" の説明を見ます。

・Oxford English Dictionary: connected with the differences that exist between groups of people who have different religious views: sectarian attacks/violence
・Collins Dictionary: narrow-minded, esp as a result of rigid adherence to a particular sect: Other members of the crowd appealed for reforms that could appeal across the sectarian divide.
・Cambridge English Dictionary: a person who very strongly supports the religious or political group that they are a member of, in a way that may cause problems with people from other groups: We have to stand up for the moderates against the extremists and the sectarians.

今の日本の学校でも未だに厳しい服装の規定がある学校があるそうですが、それなども "sectarian dress code" と言えるでしょう。