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Human rights are "commonly understood as inalienable fundamental rights to which a person is inherently entitled simply because she or he is a human being." Human rights are thus conceived as universal (applicable everywhere) and egalitarian (the same for everyone). These rights may exist as natural rights or as legal rights, in local, regional, national, and international law. The doctrine of human rights in international practice, within international law, global and regional institutions, in the policies of states and in the activities of non-governmental organizations, has been a cornerstone of public policy around the world. The idea of human rights states, "if the public discourse of peacetime global society can be said to have a common moral language, it is that of human rights." Despite this, the strong claims made by the doctrine of human rights continue to provoke considerable skepticism and debates about the content, nature and justifications of human rights to this day. Indeed, the question of what is meant by a "right" is itself controversial and the subject of continued philosophical debate.
Many of the basic ideas that animated the human rights movement developed in the aftermath of the Second World War and the atrocities of The Holocaust, culminating in the adoption of the Universal Declaration of Human Rights in Paris by the United Nations General Assembly in 1948. The ancient world did not possess the concept of universal human rights. The true forerunner of human rights discourse was the concept of natural rights which appeared as part of the medieval Natural law tradition that became prominent during the Enlightenment with such philosophers as John Locke, Francis Hutcheson, and Jean-Jacques Burlamaqui, and featured prominently in the political discourse of the American Revolution and the French Revolution.
From this foundation, the modern human rights arguments emerged over the latter half of the twentieth century.
Whereas recognition of the inherent dignity and of the equal and inalienable rights of all members of the human family is the foundation of freedom, justice and peace in the world...
—1st sentence of the Preamble to the Universal Declaration of Human Rights
All human beings are born free and equal in dignity and rights.
—Article 1 of the United Nations Universal Declaration of Human Rights (UDHR)

Read more here :http://en.wikipedia.org/wiki/Human_rights