By Ty Burr
Globe Staff / January 2, 2008

“The place from which you remember an event shapes the nature of what you remember,” says historian Michael Berenbaum, one of the wiser talking heads in the documentary clip-show “Imaginary Witness: Hollywood and the Holocaust.” The event under discussion is the central cataclysm of the 20th century, the systematic extermination of millions of Jews by the Nazi war machine. The place from which it’s remembered in popular culture is Los Angeles, home of a film industry as neurotic as it is powerful. On one hand has been denial, on the other hand kitsch. It’s remarkable that good movies on the subject come out at all.