Unjust customary sexual rights

Hereditary droit du seigneur
Feudal sexual privilege
The [droit du seigneur] is a legal or customary right of a feudal lord to have a sexual relations with a vassals bride on her wedding night, whatever the view of the bride or the groom.
Such practices tend to emerge in groups and bands, such as gangs or groups of bandits, lead by a charismatic figure who arrogates to himself rights such as those of a feudal lord.
Aggravated by 
(E) Emanations of other problems