"His enemies excoriated him as a communist and damned him for disregarding property rights and violating the canons of the capitalist marketplace," Brands explains. "The wealthy denounced him for having betrayed the class of his birth. Time magazine devoted a lead article to the burning bitterness the better-off felt for Roosevelt."
As critics branded the New Deal as a step toward Communism, Roosevelt and his administration blasted the naysayers as narrow-minded agents of greed.
"Communism is merely a convenient bugaboo," Interior Secretary Harold Ickes said. "It is the Fascist-minded men of America who are the real enemies of our institutions through their solidarity and their ability and willingness to turn the wealth of America against the welfare of America."
Roosevelt would not retreat, Brands says, and he continued to battle critics throughout his presidency to radically alter the landscape of American expectations.
https://liberalarts.utexas.edu/history/news/feature-archive/fdr-traitor-to-his-class-historian-h-w-brands-reviews-roosevelt-s-command-performance-popular-appeal-and-depression-era-policies.html
He also addressed communism at his re-nomination speech in 1936. However, I think some of the context is lost to us
https://speakola.com/political/franklin-d-roosevelt-let-me-warn-you-reelection-1936

"The Russian newspapers during the last election [1932] published the photograph of Franklin D. Roosevelt over the caption,
'The first communistic President of the United States,'" said Sen. Thomas Schall, a Republican from Minnesota. "Evidently the Russian newspapers had knowledge concerning the ultimate intent of the President, which had been carefully withheld from the voters in this country. In fact, the voters of the United States were meticulously misled as to such intentions."
https://www.politifact.com/factchecks/2009/sep/22/barack-obama/obama-roosevelt-socialist-communist/