The National interest and the Common Good

The way the two major political parties use the words National interest (note the capital N in labour's press statements) and the common good is reminiscent of far right politics.
Labour's obsession with the National interest in matters related to immigration and foreign policy is outdated and out of tune with a world in which human rights are becoming a corner stone of a progressive foreign policy. This is especially repulsive when used within the context of gross human rights violations in Libya.
The PN's obsession with the common good on issues like divorce is equally repulsive. For while I fully subscribe to the idea of a common good with regards to environmental issues and social justice, this idea becomes dangerous when applied to matters of personal choices and morality.