I know SO many people who let their very young kids watch The Walking Dead. They brought a few of the actors to a local theater just for like a 2 hour panel type event, and I lost count of the number of kids who were clearly under 10, sporting zombie t-shirts.
There was also a mother ranting on Facebook about how one of the actors at a Walker Stalker con kept swearing during a panel - she was upset that her child had to hear that kind of language. If I remember correctly her child was around 7, and he/she did watch the show. I got into an argument with her about how silly it is to freak out over a swear word when your child is watching a show filled with extreme violence, gore, attempted rape/rape, sex, cannibalism... I mean, WTF?
Parents can be so weird.