Did Trump say “Communist / Communism” at St. Clair County, Michigan?

Yes. Said at 3:57:07 PM ET, flagged live 0.34 seconds after the word.

“But Americans did not spend all these years fighting communists and terrorists in order to”

From Saidwire’s live log of Trump rally · St. Clair County, Michigan. All 13 words said at this event.