Trump is falsely linking Democrats to Communism. He realizes that if he says Communists eat babies most of his followers will believe him!
Most Americans have no idea what those terms really mean, just that they are bad. Most don't have a clue.
In actuality they are economic and political theories, like capitalism, nothing more!
COMMUNISM - government ownership of property, equal wealth distribution.
SOCIALISM - seeks greater equality by creating more equal distribution of wealth with limited government ownership of property.
CAPITALISM - a system in which a country's industry is controlled by private owners for profit.
The United States practices Capitalism or bend over buddy, your share is coming! It leads to Trumps and Musks and Kochs ... etc. The others don't work either as in Germany and Russia and Poland who have tried variations.
The latest is Democratic Socialism (Mandami, Sanders) which is a real mystery but it links socialism and communism to the Democrats.
Chaos and confusion are Trump's trademarks and he wins by using them, as he is doing here, relying on American stupidity!