At this point I wouldn’t be pulling any punches. Make direct comparisons between the 6 January 2021 insurrectionists and the participants in the 1923 putsch and point out the price everyone paid because the latter were coddled and pardoned. However, that approach would be too “uncivil” for the delicate sensibilities of the DNC, which favours the always effective combination of compromise with fascists and the occasional sternly worded letter.
Speaking of which, as a side note there was a recent big-budget film that attempted to revise history’s judgment of Neville Chamberlain (played by Jeremy Irons). Fortunately, actual historians stepped in quickly to point out that, whatever his nobler motives, he was still a hapless appeaser of a bullying fascist. Perhaps the Dems didn’t read those reviews.
ETA: case in point:
She probably would have asked Jesse Owens not to compete in 1936 too.
If The Lincoln Project and these GOP Accountability people manage to get their preferred candidate (some Romney type) as the nominee I guarantee you that they’ll turn their very same guns on Biden before you can even blink.