If you remember Dems claiming that the 2004 election was stolen, then you should be able to remember that the tenor, tone, and energy level was radically different than the events of 2020, and it all went away much faster. For example, I don't believe any Democrat candidates ran an '06 or '08 campaign around the idea that the '04 election was stolen, something which is happening right now in a number of states.
On the off chance you weren't aware, the story about an officer being bludgeoned to death by a rioter wielding a fire extinguisher was completely fabricated. [1]
He was uninjured during the riots, and died the following day of a stroke due to a preexisting blood clot. Kind of interesting the massive propaganda campaign following his death that was maintained for months, even though the coroner's report on his death would have been available within days of his death. And the powers that be obviously knew, whatever the cause, it had 0 to do with the lie that was told, and repeated for months by the media, to the American people.
The only people that died during the riot were unarmed rioters.
Unarmed rioters that were ignoring LEO instructions to stop trying to breach an area containing a number of politicians. There is every reason to believe that, had they breached, violence would have occurred. Acting as if their violent behavior was not the direct cause of their death just because they were unarmed is not reasonable, in my opinion.