George Washington planted the idea of a day set aside for giving thanks for all the good of the past year. The underlying idea was that a civil agency would follow up.
Sarah Joseph Hale in 1846 began a 30 year long effort of letter writing to the President to declare a national day of thanksgiving along the lines that George Washington had started. In 1863 Abraham Lincoln declared the last Thursday in November as s national day of thanksgiving
In 1939 FDR proclaim the last Friday as thanksgiving. Roosevelt
rational was as the depression was coming to an end a holiday before a Saturday would be a benefit to business. The America public
was so outraged at this that in 1941 Congress declared the last Thursday as a national holiday.
It would seem that FDR had the original idea of Black Friday...

Seventy one years ago the American public rallied against what they perceived as a wrong. The public began a letter writing campaign to congress that Congress was forced to take action. Their action was to pass the law stating the last Thursday in November as Thanksgiving
A campaign of letters/emails to your congress person might have more effect than the National Op-out day has had ...