Also, if you are looking for debatable issues, you can ask how different parents' values can be from society's before society is justified in removing their children from their care. For instance, what about parents who do not believe, for religious reasons, in using modern medicine? Or parents who hold extreme political views? Both of these have had cases in the news recently:
slaughteringthesheep.wordpress.com/2009/05/17/eleven- year-old-dies-needlessly-when-parents-refuse-medical-care-an d-pray-instead/
infoniac.com/offbeat-news/parents-lose-custody-of -their-children-for-teaching-them-nazi.html
Sean, EssayForum.com