Activists target Bangladesh child marriages
25 April 2012 Last updated at 04:26 BST
It is estimated every three seconds somewhere in the world a girl is forced to marry against her will.
In Bangladesh 20% of girls become wives before their 15th birthday.
Now campaigners are stepping up their efforts to put a stop to the practice.
The BBC's correspondent Angus Crawford got exclusive access to one attempt to halt a wedding.