Societal Norms....

This is in response to La Tortuga's question on her post. The question is "Do you think social norms keep us from being spontaneous and cause us to care too much about what others think?"
I think that today's society tries to censor kids way more then it should. My sister likes to wear things with skulls on them because she thinks it's cute. However, she cannot wear anything with skulls on it in school because the school counselors link that to depression. In reality, she just felt like wearing skulls with bows that day. Many schools try to censor clothes (T-shirts especially) because they do not want anything inappropriate in school. I personally believe that in life, some things are going to be considered inappropriate and if we censor kids from experiencing it when they are young, then when they do experience it in the future, they won't know how to handle it. By saying we do not want to subject kids to certain fashions or beliefs we are stifling their ability to think open minded about things. In many cases in history, you see people being ostracized from a group, or a war being started because someone was ignorant towards a situation. I think we could loosen up on some of the rules we have, in schools especially.
question: Do you think censorship leads to rebellion and/or ignorance? if not,list some effects (positive or negative) censorship does have on society.