Some of the Jan 6 defendants pleaded remorse to get shorter sentences, and are now announcing in public that they were pretending: https://boingboing.net/2023/07/16/after-faking-remorse-in-court-in-hopes-of-getting-short-sentences-jan-6-rioters-renounce-their-apologies.html Shouldn't that be treated as a confession of perjury?