Should sex and violence on television or in the movies be restricted?

I think it's up to the parents how much they allow their children to have an access to television. I think parents should balance their children television and activities time. Parents should be more bewares to what their kids are watching. There are so many shows on the television that are not appropriate for the kid. Too much television is not good for the kid, they need to have a balance for their body to stay fit and healthy.