Both sides are guilty of smear campaigns. One little flub or gaffe and a video taking it out of context will start circulating.
Just go to /r/politics if you want examples of the left smearing the right
Why not let media show the original so called undoctored version?
https://www.nytimes.com/2019/05/24/us/politics/pelosi-doctor...
Video at top has her speaking at normal pace, and then shows a slowed-down version. Is this something you dispute? I have not followed the story at all, beyond seeing that article.
Trying to take myself away from my own biases, perhaps you can say Trump but coming from the executive branch you could say he's not that comparable, also people on both sides have called him outrageous.
More direct comparisons would be Paul Ryan, Boehner, Newt Gingrich. I didn't see them getting Pelosi-scale smearing.