Well, I think we all know the allegations made between Christians over their belief or disbelief in evolution. But to be fair, I've also read accounts where some scientists have hurtfully been labeled as psuedoscientists by their professional peers for even questioning the evidence and work of other evolution scientists. I remember a while back, how a scientist (an old earth scientist), at the Smithsonian Institute was for demoted, and afterwards accused his peers of bullying him after the publication of one of his papers. He even accused a few of questioning his political beliefs (insinuating that he voted for Bush).
Discovery Institute - Article Database - US Congressional Committee Report: INTOLERANCE AND THE POLITICIZATION OF SCIENCE AT THE SMITHSONIAN
There is also the story of Dr. Richard Milton, an
atheist and evolution scientist who sincerely questioned some of the evidence for Darwinism, and said that true science should be open to debate. After the publication of his paper entitled, "Shattering the Myths of Darwinism", he said in his own words, that he experienced a "kind of witch-hunting activity by the Darwinian police". Unsurprisingly, the worst accusations came from the now famous Richard Dawkins, who accused Milton of being "stupid", "looney" and "in need of psychiatric help". Milton said that Dawkins even wrote newspaper editors telling them that Miton was a "secret Creationist" and should not be believed.
Here is an article by Milton himself.
World Mysteries: Darwinism - The forbidden subject, by Richard Milton
These are just two of the countless accusations I've read that supposedly takes place behind the scenes when it comes to Darwinism and evolution.
But regardless of the personal belief, I"m on board with Izzibeth when it comes to tolerance of other views without making brutal accusations or resorting to bullying tactics. And like presluc said, it is true that after intense debates on the existence of G-d, both sides usually walk away without having their perspective changed by the other person. So I usually don't engage in such conversations once it becomes a heated debate.