Why are kids bad?

Do you have children or know children that have attitude and don't listen? I believe that nowadays, the children watch too much television and around a lot of bad influences. It seems like the kids don't want to listen and they have a bad mouth on them and you want to know where they got it from, which you can only think it is from school or tv. They have so many programs on tv now that are kids programs but shouldn't really be for them. As for their attitude and bad mouth, they tend to say stuff that is never said at home and then you want to know how they learned it. For instance, my daughter has a really bad attitude which I really can't pinpoint how she got this attitude except possibly by watching tv or at school. At home, she does not here any cursing or attitudes that would cause her to have a bad attitude. I believe that more kids should be disciplined to make the society better. I discipline my daughter by not letting her watch cartoons or just sending her to her room but this doesn't always help because she will sit there for 30 minutes and when she is off of time out, 30 minutes letter she is back to where she was earlier. My daughter in the last year has gotten better but it has been a long road with her because she acts up when she gets jealous of her brother.