4 years ago? That was when Biden was president - are you suggesting that Biden was an autocrat consolidating power? (If so, he was remarkably bad at it)
January 6th was in 2021, 4 years ago today Trump was 9 months out from having perpetrated the Big Lie about the 2020 having been stolen, attempted to alter the results through spurious legal means, and incited a mob to storm the capitol in order to prevent the official electoral vote count.
In my book, if people took liberal democracy serious, he should have been persona-non-grata in the eyes of every politician and political party.
Instead he was saved from impeachment by McConnel rehabilitated by McCarthy, and people increasing memory-holed the event, equivocated about George Floyd protests (not even remotely comparable), or were supporters of the "heroes of J6"... now we are where we are, well-cooked frogs in a pot that's about the boil over.
I agree - that was a clear demonstration of the rule of law just being ignored or at least not enforced. I also don't understand how he could appear on any ballots after his various rape charges and felonies - that should preclude people from any position of responsibility.