Individual liberty and national security are not mutually exclusive concepts. However, during wartimes or emergencies, with national security as primary concern, government tends to limit or deprive individual civil liberties that have been enjoyed and taken for granted during peace time. Even for a country like the United States that has been an established democracy and which places special emphasis on respecting human rights, cases of compromising and infringing of individual liberties in the name of national security continue to surface in its history. With an evolving pluralistic society and greater consciousness of civil liberties, the law enforcing agencies in the United States, even in the aftermath of the terrorist attack of September 11, can no longer curtail civil liberties at will.