Here is an essay by Cass Sunstein on the Alger Hiss-Whittaker Chambers clash from the late 1940s. This post by Ann Althouse links to it, and while I read only about twenty of the comments, they seem a bit unfair. I thought the article was actually a fairly neutral account of what that clash was all about, but the commenters rip into him for his socialism. I would rip into him, too, for that if he had talked about it or if he had been unfair to Chambers, but I noticed nothing like that. The only thing I would change is to mention that the turning point seems to have been when people learned that Chambers knew about Hiss’s interest in bird-watching and his joy during the period of their acquaintance at having spotted a rare bird. At that point, people who had assumed that Chambers was lying began to think he was telling the truth.
If this was the first I had heard of this clash, I would be inclined to support Chambers based on Sunstein’s account.