I want to say there was a recent-ish (maybe mid-00s) acknoedgement by the U.S. that the original story of the Gulf of Tonkin Incident was a complete fabrication. It basically went:

• Original story (that a Vietnamese ship fired on an American one) came out in the 60s and was used as justification for a full U.S. invasion
• Over time some suggestions came out that maybe thr story wasn't entirely true, or might have been a misunderstanding, etc.
• Small changes get made to the official version of events. The U.S. eventually admits its ship was never fired upon.

Note that if you believed the truth at any point up until the final revelation you would have been called some crazy conspiracy theorist and asked why you hate America.