A law called the "1971 Sorcery Act" legally acknowledges a cultural superstition that results in the burning alive of accused women, which perpetrators use in their defense.

http://www.womensmediacenter.com/feature/entry/witch-burnings-in-papua-new-guineain-2013

About 150 women per year are attacked and killed, including being roasted over slow fire, nailed to crosses, hung in public places and beaten to death, locked inside homes and set alight, weighted with stones and thrown into rivers, and hacked to death with machetes. Women who rise to their defense are in turn accused and killed. Government agencies defend the behavior because it is "spiritual". Meanwhile, development agencies are reluctant to touch the issue, because tradition and religion are taboos for donor agencies. So cultural relativism lives while women are burned to death. It is urgent that pressure be placed on the government of Papua New Guinea to halt this appalling practice, with education as well as prosecution of perpetrators.