"Global warming denial" is not a helpful phrase

Jeff Jacoby writes (via Memeorandum) about the overbearing attitude now being taken about global warming, using the word "denial" as in "Holocaust denial."

Why the relentless labeling of those who point out weaknesses in the global-warming models as "deniers," or agents of the "denial machine," or deceptive practitioners of "denialism?" Wouldn't it be more effective to answer the challengers, some of whom are highly credentialed climate scientists in their own right, with scientific data and arguments, instead of snide insinuations of venality and deceit? Do Newsweek and Begley really believe that everyone who dissents from the global-warming doomsaying does so in bad faith?

How ironic that people who want to rely on science are using not the language of science -- argument based on evidence -- but the language of religion -- believe or face condemnation.