Please read this article:
http://stage30.scholastic.com/browse/article.jsp?id=679
Kids, pretend play.
It is a normal developmental process. Of ALL kids.
I have a son and daughter.
Look, as a child grows up, it is a parent's responsibility to teach... their child about life.
And that includes, things like the roles of women and men, and what fiction and non-fiction is, and HOW to discern the everyday news and media that one may see.
You TEACH your child, as they grow up.
No child grows up by themselves.
A parent, guides them.
When I was a kid, heck, the roles of girls and boys were more rigid. I did NOT grow up "believing" EVERY fairy tale, I read.
I did not grow up thinking I have to be like those TV shows.
Of course not!
And I played with all those types of toys. Even toy swords and water guns and what not.
I even wanted to be a Ninja... when I was a kid.
That does not mean I actually THINK that and become it.
Superhero characters, are just pretend.
Good grief.
I watched those things when I was a kid.
My kids do too.
I do not keep my kids in a padded bubble.
I have been teaching them things/concepts, since they were 2 years old... AND also, routinely TALKED with them... about media and whatever we saw and read. Teaching them to THINK on their OWN... not just being a copy-cat follower of just thoughtlessly doing what their friends are doing. THAT is how, my kids have learned, to DISCERN things/life/social situations/friends. And now at their ages of 7 and 10, they are good at it. Since I was teaching them things like that since 2 years old, BY the time they entered into Elementary school, they had a head's up on things, so to speak.
You teach a child. BECAUSE, in life, they will be encountering ALL sorts of things. And at other friend's homes, and at school, and at the mall, and everywhere. THUS, you need to teach them, about life. How to discern things.
You cannot just keep a child at home 24/7. They will be exposed to things, other than in your own home.
And what will happen, when your kid is at someone else's home?????
Thus, you guide your kid about life and about making choices.
NO kid, and NO adult, is just a passive sponge being and doing whatever they see. You teach a child, to THINK ON THEIR OWN.