 Honor killings can also be directed towards members of one’s own group who violate certain norms. For instance, there are many places where it is not uncommon for members of a family to kill children (especially girls) who break norms of sexual morality or who otherwise fail to adhere to traditional gender norms. In these cases the desire of a group’s members to adhere to such norms is typically explained by the belief that doing so makes members of the group more attractive marriage partners, and the role honor killings play is to signal that the family (or group to which the family belongs) is committed to the norm(s) in question (United Nations Population Fund 2000; Chesler &amp; Bloom 2012; Skarbek 2014; Thrasher &amp; Handfield 2018). In some circumstances, though, a group’s commitment to a norm may be driven by pluralistic ignorance. That is, there are cases where two (or more) groups may each be engaged in a practice like footbinding or female genital cutting that they themselves would prefer not to engage in, but where they remain committed to the norm on the basis of the mistaken belief that other groups are committed to the norm (Bicchieri &amp; Fukui 1999; Bicchieri 2017). Here understanding the conditional nature of each group’s preferences is crucial to identifying the role played by pluralistic ignorance in sustaining the norm in question, while understanding the role of pluralistic ignorance in sustaining the norm helps explain why it is bad.