This PBS program is interesting:
FRONTLINE’s season premiere investigates American political leaders and choices they’ve made that have undermined and threatened democracy in the U.S. In a two-hour documentary special premiering ahead of the 2022 midterms, FRONTLINE examines how officials fed the public lies about the 2020 presidential election and embraced rhetoric that led to political violence.
The Frontline program suggests that there were many warnings of future trouble in the former president’s campaign and time in office. Republicans ignored the warnings and rallied around the candidate. The program details how close the effort to overthrow democratic elections came to succeeding.
I was annoyed by the suggestion that Democrats caused Republicans to close ranks by calling attention to the warnings. I doubt that had Democrats said and done less, Republicans would have said and done more.