There are so many things that Brian De Palma got wrong in “The Black Dahlia” that a list of mistakes would fill a long book. I had forgotten that the movie starts out with what is purportedly the Zoot Suit Riots.
LAPD officers ignore cars that have been overturned and set on fire. There is nothing to indicate this actually occurred. Zero.
ladailymirror.com 
I’m soooo glad to see this posting. I’m a devotee of the “Golden Age,” pretty familiar with the movies and radio of the 1930s and 40s. That Bette Midler/James Caan horror, “For The Boys,” left me disgruntled, and I got that same old feeling with “The Black Dahlia.” Halfway through I resented its disregard for the period, as your Hat posting indicates. A small example was when an actress says, “Back in the day…” which they didn’t say back in the day! And the cliche of a big band playing “In The Mood,” because of course that’s what every band was playing all the time in the Forties. I’ll be interested in your other examples. Thanks!
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