The spread of 'debate is over' syndrome

From Joel Kotkin at the Orange County Register:

Let’s call it “the debate is over” syndrome, referring to a term used most often in relationship with climate change but also by President Barack Obama last week in reference to what remains his contentious, and theoretically reformable, health care plan. Ironically, this shift to certainty now comes increasingly from what passes for the Left in America.

These are the same people who historically have identified themselves with open-mindedness and the defense of free speech, while conservatives, with some justification, were associated more often with such traits as criminalizing unpopular views – as seen in the 1950s McCarthy era – and embracing canonical bans on all sorts of personal behavior, a tendency still more evident than necessary among some socially minded conservatives.

But when it comes to authoritarian expression of “true” beliefs, it’s the progressive Left that increasingly seeks to impose orthodoxy. In this rising intellectual order, those who dissent on everything from climate change, the causes of poverty and the definition of marriage, to opposition to abortion are increasingly marginalized and, in some cases, as in the Steyn trial, legally attacked.

On climate and other issues, many in academia, media, government insist their viewpoint is unassailable and won’t tolerate dissent. They’re insecure about their ability to persuade, but more confident of their ability to coerce.