I'm not a parent, being only 16, so I don't really have any experience in the matter, but I agree strongly with what Kathryn is saying. (And her parenting methods. Shame about the waste of money on the kitchen set and cookies though, but I guess it saves in the long run.)
Back on topic, it's just a case of saying 'No' and not letting your children walk over you. I know I get frustrated when I see younger children totally domineering their parents/guardians - they deserve respect, not abuse! your parents/guardians brought you into the world and raised you! There's no need to sue because you are unable to raise your children properly! When I was young(er), I got 1, maybe 2 mcdonalds a year. I appreciated them so much more than someone who got them every week would. My mother knew, and still knows how to say no.
TL;DR:
Good parenting: setting boundaries, being able to control your children
Bad parenting: suing and protesting because you cannot be bothered to raise your children properly.