I've written before about my respect for the work of Jacob Bronowski. His 1973 television series, The Ascent of Man is the cornerstone on which nearly all good science documentaries are built.
Over at his blog Respectful Insolence, Orac has posted one of the most moving moments from that series, where Bronowski visits Auschwitz. As this visit occurred some thirty years after the atrocities committed there, it seems almost more poignant than a similar commentary might now. In the event that you don't read Orac (and you really should), I thought that this clip, which first set me out on a search for the entire series several years ago, deserved any additional viewers that I could provide it. Bearing in mind much current American political rhetoric, a warning against the perils of dogma is opportune, at the very least.
If you're interested in watching more of The Ascent of Man, much of it can be found on YouTube, or, in the United States, it may be obtained through Ambrose Video. Most good public libraries should have it too.