No, only one side has "politicized" it and used it for fundraising. It's not the Democrats.
And, we know what happened: Trump held a campaign rally for an election he had already legitimately lost,
just down the street form the Capitol,
on the day his loss was going to be formalized,
after he was told by everyone in his own party that he had no path forward,
with rally attendees who included far right extremist groups,
... and the crowd, predictably, rioted. Furthermore, he didn't activate the National Guard, nor did he publicly plea for the rioters-turned-domestic terrorists to stop.
We knew all of this the day of the riot.