What is the very worst "denialist" movement in the war on science?

Denialist movements in the United States and a few other countries have gotten so powerful that they've managed to turn climate change into a "debate," vaccination into a "danger," and evolution into a theory that's "equivalent" to creationism. Which of these movements is doing the most damage to science? » 11/05/13 1:59pm 11/05/13 1:59pm