The BBC reports that family feuds and revenge killing in Albania prevents some children from leaving their house:

Because the Kanun precludes entering another person’s property to exact revenge, home is the only safe place for those under threat.

[…]

The non-governmental National Reconciliation Committee (NRC), a group that tries to mediate between warring families, estimates that several thousand Albanian families are currently embroiled in feuds nationwide, leaving some 800 children confined to their homes.

Reconciliation is said to require unanimous consent from family groups of 50 or more people.