Below is an actual excerpt from an FBI memo in 1947 (since declassified) which alerts the reader to the commie propaganda contained in — wait for it — It’s A Wonderful Life:

To: The Director

D.M. Ladd

COMMUNIST INFILTRATION OF THE MOTION PICTURE INDUSTRY

(RUNNING MEMORANDUM)

There is submitted herewith the running memorandum concerning Communist infiltration of the motion picture industry which has been brought up to date as of May 26, 1947….

With regard to the picture "It’s a Wonderful Life", [redacted] stated in substance that the film represented rather obvious attempts to discredit bankers by casting Lionel Barrymore as a "scrooge-type" so that he would be the most hated man in the picture. This, according to these sources, is a common trick used by Communists.

In addition, [redacted] stated that, in his opinion, this picture deliberately maligned the upper class, attempting to show the people who had money were mean and despicable characters. [redacted] related that if he made this picture portraying the banker, he would have shown this individual to have been following the rules as laid down by the State Bank Examiner in connection with making loans. Further, [redacted] stated that the scene wouldn’t have "suffered at all" in portraying the banker as a man who was protecting funds put in his care by private individuals and adhering to the rules governing the loan of that money rather than portraying the part as it was shown. In summary, [redacted] stated that it was not necessary to make the banker such a mean character and "I would never have done it that way."

[Source]