In what way do you think a single riot benefited Russia? The American left in their ridiculous treatment of Trump got a huge proportion of people to actually hate their country. Any reasonable person can see that US policy has been relatively consistent for decades independent of which party the president is. Biden is doing the same as Trump, which was the same as Obama, which was the same as Bush. At least one user here memes "nothing will fundamentally change". But for 4 years, everything was fascism.
The easy example is "kids in cages". The infamous picture is from the Obama presidency, Trump closed that facility, and now Biden has reopened it. But only for Trump, people were freaking out about "concentration camps". I'm not intending to condemn the Democrats here, the southern border is not a simple problem with a simple solution, and people are doing their best to handle it, and the courts have been extra unhelpful to that end. These are facilities that at this point offer food, shelter, and medical care to people who mostly turn themselves in while others are rescued from the wilderness, they offer security from cartels that many are fleeing, they have education facilities for children, they let people go back to their home country if they don't want to be there, and now half of America thinks these are concentration camps run by fascists because it was a convenient attack against Trump.
It's not even the most heinous thing, the number of lies during a once-in-a-century pandemic was disgusting. "Hey, Trump, people say you're not doing anything about the pandemic." "That's a hoax, of course we're doing stuff." Headline: Trump Says Covid-19 is a Hoax. Again, it's not even the Democrats. Democratic politicians at every level were cooperating with Republicans in the early days of the pandemic. It was the media and those even further left trying to turn a global tragedy into a revolutionary moment who set the national unity on fire.