For 20 years, Mexican activist Lydia Cacho has been waging war on human trafficking in Mexico. In 1999 she launched CIAM Cancun (the Comprehensive Care Centre for Women), a shelter for battered women and children that has been threatened with closure due to lack of funding.

The organisation was created in response to the sexual violence against women and children that is rife in Mexican culture. It's a refuge in a country where trafficking is seldom punished.

Polygamy is a very complicated. Or is it? For many people it is very simple and those simple responses fall in these three categories:

1. Polygamy is bad for women and an example of extreme patriarchy;

2. There is nothing wrong with polygamy that isn't wrong with all relationships; and/or

3. Polygamy is a perfectly valid choice.

So why is it a criminal offence in Canada and why is there a very unusual Constitutional Reference case underway in Vancouver?