Self identifying

On October 2 a rally designed to support the Obama Administration and the progressive cause, and to push back against the Tea Party rallies, was held in Washington D. C. Several hundred organizations endorsed it. If one wants a list of the organizations that make up the activist Left in the United States, this list serves a a good starting point because it contains those that have self-identified as being Leftwing. Here they are, taken from the onenationworkingtogehter.org website:
1Sky
350.org
A. Philip Randolph Institute
A. Philip Randolph Institute - The Metropolitan New York Chapter
Action LA Network
AFGE: American Federation of Government Employees
AFL-CIO
AFSCME
AFSCME 3800 - University of Minnesota Clerical Workers
AIDS Walk Washington
All Hands on Deck
Alliance for Democracy
Amalgamated Local 171 UAW
American Arab Anti-Discrimination Committee
American Association of University Professors
American Federation of Teachers
American Federation of Television and Radio Artists
American Friends Service Committee
American Muslim Association of North America (AMANA)
American Rights at Work
Americans for Democratic Action
Americans for Financial Reform
ANSWER (Act Now to Stop War and End Racism) Coalition
Apollo Alliance
Bail Out the People Movement
Bethel Tabernacle AME Church, Brooklyn
Beulah Church of the Nazarene
Black Leadership Forum, Inc.
Black Women’s Roundtable
Black Youth Vote
Bronx for Change
Brooklyn for Peace
Brooklyn United for Innovative Local Development
Bryn Mawr Peace Coalition
California Black League of Voters
California National Organization for Women
Campaign for America’s Future
Campaign for Community Change
Campaign for Peace and Democracy
Campus Camp Wellstone
Campus Progress
CEEF: Center for Community and Economic Justice
Center for Biological Diversity
Center for Community Change
Central Jersey Coalition Against Endless War
Charlie Fink Productions
Chesapeake Climate Action Network
Chicago Democratic Socialists of America
Chicago Teacher’s Union – AFT Local 1
Children’s Defense Fund
Church of the Evangelical United Church of Christ
Citizen Wave
Cleveland Peace Action
Climate Crisis Coalition
Coalition for Peace Action
Coalition of Black Trade Unionists
Coalition of Black Trade Unionists Region One
Coalition of Labor Union Woman
Coalition on Human Needs
CODA (Coalition for a District Alternative)
Code Pink
Coffee Party Progressives
Colage
Color of Change.org
Committee of Correspondence for Democracy and Socialism
Communication for Social Change Consortium
Communications Workers of America
Communications Workers of America Local 2336
Communist Party USA (CPUSA)
Community Empowerment Network
Council of Islamic Organizations of Greater Chicago
Courage Campaign
CUNY University Student Senate
CUSH
DC 1707, AFSCME
DC Asian American and Pacific Islander Democratic Caucus
DC Latino Caucus
DC Vote
Delaware Pacem in Terris
Demand Equity Now
Democracy for America
Democratic Socialists of America
Demos
Detroit Democratic Socialists of America
Disciples Justice Action Network
Dr. Martin Luther King, Jr. DC Support Group
Drum Major Institute
Earth Day Network
Energy Action Coalition
Equality Federation
Equality Wisconsin, Inc.
Ex-Offenders Association of PA
Family Equality Council
Fellowship of Reconciliation
Free Speech TV
Friends of the Earth
Friends of the Poor
Fur Cultural Revival (Darfur Community Center)
Gathering for Justice
Gay Alliance of the Genesee Valley
Gay, Lesbian and Straight Education Network (GLSEN)
General Board of Church and Society- United Methodist Church
Generation Change
Generational Alliance
Georgia Peace and Justice Coalition
Gertrude Stein Democratic Club
Get Equal
Girldrive
Gray Panthers
Greater Allen A.M.E. Cathedral
Green for All
Green Party
Green Party USA
Haitian American Caucus
Harlem Congregations for Community Improvement
Harlem One Stop
HOFADS Corp., Inc.
Human Rights Campaign
Humanist Party, New York City Chapter
Illinois Single Payer Coalition
Imani Group
immigration Equality
Injured Workers United
Institute for Policy Studies
Institute of Caribbean Studies
Interfaith Worker Justice
International Association of Machinists and Aerospace Workers
International Federation of Black Prides
International Socialist Organization
International Union of Painters and Allied Trades, AFL-CIO
Iraq Veterans Against the War
Jewish Arab Dialogue Association
Jewish Funds for Justice
Jewish Labor Committee
Jobs with Justice
Jordan / Rustin Coalition
Latin America Solidarity Coalition
Latino Action Coalition of DC
Latino Equality Alliance
Latino Federation of Greater Washington
Lawyers Committee for Civil Rights Under Law
Leadership Conference on Civil and Human Rights
League of United Latin American Citizens (LULAC)
Left Labor Project
Lemeul Haynes Congregational Church
Lincoln Park Neighbors United for Peace, Chicago
Long Island C.B.T.U.
Maine Green Independent Party
Majority Agenda Project
Make the Road NY
Maryland and DC AFL-CIO
Maryland Black Family League
Mass Equality
Mass Transgender Political Coalition
Mexican American Coalition
Midwest Academy
Minnesota Coalition for a People’s Bailout
Mother A.M.E. Zion Church
NAACP
National Action Network
National Alliance Against Racist and Political Oppression, Chicago Branch
National Association for Equal Opportunity in Higher Education
National Association of Black Social Workers
National Baptist Convention, USA, Inc.
National Black Justice Coalition
National Black L.U.V. Festival est. 1997
National Black Law Students Association
National Black Police Association
National Center for Transgender Equality
National Coalition on Black Civic Participation
National Community Reinvestment Coalition
National Congress of Black Women
National Council of La Raza
National Council of Negro Women
National Domestic Workers Alliance
National Education Association
National Exhoodus Council
National Gay and Lesbian Task Force
National Immigrant Solidarity Network
National Jobs For All Coalition
National Missionary Baptist Church
National Network Opposing the Militarization of Youth
National Nurses United
National Organization for Women California
National Stonewall Democrats
National Union of Home and Health Care Employees
National Urban League
National Wildlife Federation
New England Region – AFSC
New Haven Peoples Center
New Jersey Black Issues Coalition
New York City Democratic Socialists of America
New York State AFL-CIO
New York Urban League
Next Step
North Country Peace Group (Long Island)
North Manhattan Neighbors for Peace and Justice
North Suburban Peace Initiative
Northeast Connecticut Coalition for Peace and Justice
NY Coalition of 100 Black Women
NYC Environmental Justice Alliance
NYC LCLAA
NYU Nursing Doctoral Students Organization
Ohio AFL-CIO
One of the 266 Wrongfully Terminated
P.A.P.A.II People Assisting Positive Actions
Parents, Families and Friends of Lesbians and Gays
Pax Christi Metro DC-Baltimore
Pax Christi USA
Peace Action
Peace Action Education Fund
Peace Action Maine
Peace Action Montgomery
Peace and Freedom Party
Pennsylvania Council of Churches
People for the American Way
People’s Organization for Progress
People’s Organization for Progress
Physicians for a National Health Program
Planned Parenthood
Pledge of Resistance - Baltimore
Policy Link
PowerPAC
Prayer, Praise and Worship Centers of America
Pride at Work
Progress Ohio
Progressive Congress Action Fund
Progressive Democrats of America
Progressive Democrats of America - NYS and NYC
Queers for Economic Justice
Rainbow PUSH Coalition
Reform Immigration for America
Resurrection Temple of the Lord
Retail, Wholesale and Department Store Union
Riverside Edgecombe Neighborhood Association (RENA)
Roosevelt Institute
School of Americas Watch (SoA Watch)
SEIU 1199
SEIU Local 32BJ
SEIU Local 722
SEIU: Service Employees International Union
September 11th Families for Peaceful Tomorrows
Sierra Club
Sikh Coalition
Single Payer Action Network Ohio - SPAN Ohio
Single Payer New York
Society of American Law Teachers
Sojourners
Solidarity
Stonewall Democratic Club
Stonewall Democratic Club - Los Angeles
Stonewall Young Democrats
Student World Assembly
Suffolk Peace Network
Teamsters Local 808
The Community Church of NY Unitarian Universalist
The L.I.F.E. Institute
The New Testament Revival Cathedral
The New York Immigration Coalition
The Opportunity Agenda
The Other 98%
The Power: The People United for LGBT Equality
The Religious Institute
The Shalom Center
The Southern Anti-Racism Network (SARN)
Tikkun-Network of Spiritual Progressives
TransAfrica Forum
Transition United States
Transport Workers Union of America
True Colors, Inc.
TWU Local 100
UAW, International Union
Unid@s LGBT- The National Latin@ LGBT Human Rights Organization
Union Jobs Clearinghouse
Unitarian Universalist Association of Congregations
Unite Here
United Food and Commercial Workers International Union
United Food and Commercial Workers Minority Coalition
United for Peace and Justice
United Mine Workers of America
United Puerto Rican Organization of Sunset Park
United States Students Association
United Steel Workers
Urban Agenda
US Action
US Campaign to End the Israeli Occupation
US Human Rights Network
US Labor Against the War
US Peace Council
US Peace Council– Wisconsin
Utility Workers Union of America, AFL-CIO
Veterans for Peace
Veterans for Peace NY
Voice of Haitian Americans Inc.
Voices for Creative Nonviolence
WAND: Women’s Action for New Directions
War Resisters League
Ward 7 Business Professional Association
Washington Peace Center
Welfare Rights Committee
Whitman Walker Clinic
William Kelibrew Foundation
Win Without War
Wishadoo
Witness Against Torture
Women’s Caucus for Political Science
Women’s Funding Network
Women’s International League for Peace and Freedom
Working Families Party
WPFW
Ya Ya Network
Young People For Working America