American Civil Liberty Union - www.ACLU.org
The ACLU is our nation's guardian of liberty, working daily in courts, legislatures and communities to defend and preserve the individual rights and liberties guaranteed to all people in this country by the Consitution and laws of the United States.
Americans United for Separation of Church and State - www.au.org
Since 1947, Americans United has worked to protect the constitutional principle of church-state separation, a vital cornerstone of religious liberty. Americans of many faiths and political viewpoints, individuals from all walks of life, have come together to defend freedoms.
People for the American Way - www.pfaw.org
People For the American Way organizes and mobilizes Americans to fight for fairness, justice, civil rights and the freedoms guaranteed by the Constitution.