Why are there inequalities among children?

Nowadays, more and more children are suffering from the inequalities. There's an increasing amount of children have been put in risks, both materially and emotionally.

Why do inequalities happen? As we know the society in no longer as peaceful as we thought, the most commonly form of family is Nuclear Family, which involving mother, father and their children. It seems that nuclear families are disappearing gradually, more children are living with lone-parent family, either living with mother or father. This really does an impact on those innocent children.

Poverty has a significant influence on the inequalities among children. Adults are likely to be at work for most of the time, in order to ensure their current living standard and family income. On the other hand, children wouldn't have enough child-care, therefore children's way of thinking could be isolated or there may be lack of dependency.