No, that's not "soccer mom BS", but the traditional conservative belief that we can and should protect our kids from that which would harm them.
I for one, do not embrace the notion that children have constitutional rights. That is, the right to expression, firearms, vote, drink, etc. They are a "Protected Class", and as such are ENTITLED to be fed, clothed, housed , and educated until they are adults, at which time they are ready to assume the full rights and responsibilities that the constitution protects.
The idea that those under 18 have "rights" to view such movies as "Basketball Diaries" I find absurd and is one reason why our schools and society can't find its moral a$$ with both hands. Children have (or should have) protection, adults have "rights". Conservatives are NOT LIBERTINES!