Nightfall, Jan. 30. Eight-million Iraqi voters have finished risking their lives to endorse freedom and defy fascism. Three things happen in rapid succession. The right cheers. The left demurs. I walk away from a long-term intimate relationship. I'm separating not from a person but a cause: the political philosophy that for more than three decades has shaped my character and consciousness, my sense of self and community, even my sense of cosmos.

I'm leaving the left -- more precisely, the American cultural left and what it has become during our time together.

I choose this day for my departure because I can no longer abide the simpering voices of self-styled progressives -- people who once championed solidarity with oppressed populations everywhere -- reciting all the ways Iraq's democratic experiment might yet implode.

My estrangement hasn't happened overnight. Out of the corner of my eye I watched what was coming for more than three decades, yet refused to truly see. Now it's all too obvious. Leading voices in America's "peace" movement are actually cheering against self-determination for a long-suffering Third World country because they hate George W. Bush more than they love freedom.

Like many others who came of age politically in the 1960s, I became adept at not taking the measure of the left's mounting incoherence. To face it directly posed the danger that I would have to describe it accurately, first to myself and then to others. That could only give aid and comfort to Jerry Falwell, Pat Robertson, Rush Limbaugh, Ann Coulter and all the other Usual Suspects the left so regularly employs to keep from seeing its own reflection in the mirror. ...

I began my activist career championing the 1968 presidential candidacies of Robert Kennedy and Eugene McCarthy, because both promised to end America's misadventure in Vietnam. I marched for peace and farm worker justice, lobbied for women's right to choose and environmental protections, signed up with George McGovern in 1972 and got elected as the youngest delegate ever to a Democratic convention.

Eventually I joined the staff of U.S. Sen. Howard Metzenbaum, D-Ohio. In short, I became a card-carrying liberal, although I never actually got a card. (Bookkeeping has never been the left's strong suit.) All my commitments centered on belief in equal opportunity, due process, respect for the dignity of the individual and solidarity with people in trouble. To my mind, Americans who had joined the resistance to Franco's fascist dystopia captured the progressive spirit at its finest.

A turning point came at a dinner party on the day Ronald Reagan famously described the Soviet Union as the pre-eminent source of evil in the modern world. The general tenor of the evening was that Reagan's use of the word "evil" had moved the world closer to annihilation. There was a palpable sense that we might not make it to dessert.

When I casually offered that the surviving relatives of the more than 20 million people murdered on orders of Joseph Stalin might not find "evil'" too strong a word, the room took on a collective bemused smile of the sort you might expect if someone had casually mentioned taking up child molestation for sport. ...

In the 1960s, America correctly focused on bringing down walls that prevented equal access and due process. It was time to walk the Founders' talk -- and we did. With barriers to opportunity no longer written into law, today the body politic is crying for different remedies.

America must now focus on creating healthy, self-actualizing individuals committed to taking responsibility for their lives, developing their talents, honing their skills and intellects, fostering emotional and moral intelligence, all in all contributing to the advancement of the human condition.

At the heart of authentic liberalism lies the recognition, in the words of John Gardner, "that the ever renewing society will be a free society (whose] capacity for renewal depends on the individuals who make it up." A continuously renewing society, Gardner believed, is one that seeks to "foster innovative, versatile, and self-renewing men and women and give them room to breathe." One aspect of my politics hasn't changed a bit. I became a liberal in the first place to break from the repressive group orthodoxies of my reactionary hometown.

This past January, my liberalism was in full throttle when I bid the cultural left goodbye to escape a new version of that oppressiveness. I departed with new clarity about the brilliance of liberal democracy and the value system it entails, the quest for freedom as an intrinsically human affair and the dangers of demands for conformity and adherence to any point of view through silence, fear, or coercion.

True, it took a while to see what was right before my eyes. A certain misplaced loyalty kept me from grasping that a view of individuals as morally capable of and responsible for making the principle decisions that shape their lives is decisively at odds with the contemporary left's entrance-level view of people as passive and helpless victims of powerful external forces, hence political wards who require the continuous shepherding of caretaker elites.

Leftists who no longer speak of the duties of citizens, but only of the rights of clients, cannot be expected to grasp the importance (not least to our survival) of fostering in the Middle East the crucial developmental advances that gave rise to our own capacity for pluralism, self-reflection, and equality. A left averse to making common cause with competent, self- determining individuals -- people who guide their lives on the basis of received values, everyday moral understandings, traditional wisdom, and plain common sense -- is a faction that deserves the marginalization it has pursued with such tenacity for so many years.

All of which is why I have come to believe, and gladly join with others who have discovered for themselves, that the single most important thing a genuinely liberal person can do now is walk away from the house the left has built. The renewal of any tradition that deserves the name "progressive" becomes more likely with each step in a better direction.

Excerpts from an op-ed column by Keith Thompson, a Petaluma, Calif., writer and the author of "Angels and Aliens" and "To Be a Man."