A child that grows up in a family that talk about 'them ni*gers' or 'them mormons' is going to make assumptions. That is why those families continue prejeduces, and why I see a problem with the family system.
The child that hears early on speeches on 'don't do drugs' and abstinence will keep that in thier mind regardless fo how many times they try to shunt it out of their mind. A positive way of looking at it. Everyone knows somethings just shouldn't be done, and there IS a crossing of the line, and punishment SHOULD be delivered. However, when OPINIONS don't agree between child and parents, that is nowhere near the line.