Question: (Note: I'm from the UK so whilst we get some news about America our news cycle isn't dominated by their affairs)

So, in 2020 there was the US elections, Biden won, but Trump is refusing to concede and is basically alleging there was massive voter fraud to prevent his win.

If you look at it from the perspective of a big Trump supporter, it looked like Trump might squeak out a win then suddenly there are a bunch of votes for Biden (aka postal votes) and then Biden wins comfortably, and the person you support alleges that there was massive voter fraud/irregularities and that's why he lost.

From their perspective it seems a compelling argument (though it is said to be wrong), Trump still has a lot of supporters and his base seem to be pretty devoted to him, plus they tend to be the people who are heavily armed and generally like to cause trouble.

Meanwhile throughout 2020, even during the whole pandemic situation, it seems that the USA has become a "riot friendly" country, the deaths of George Floyd and others at the hands of police officers have sparked massive protests across the country which in quite a few cases have turned into riots, with business being looted, property being damaged and further violence and deaths amongst those protesting.

I feel that the potent mix of Diehard Trump fans(with guns, who also generally don't seem to care about the COVID 19 pandemic) + Trump constantly claiming mass voter fraud, would result in violent protests and riots across the country amongst his fans.

Have there been any riots in the US attributed to the recent election results?

Answer: 
(EDIT 1/10: A lot has changed since November, this answer reflects the information available at that time.)

**No**, there have been no such riots so far. (EDIT 11/20: The incident in Fizz's answer is the most notable exception I've seen so far.) For the reasons outlined in the question, an ongoing risk does exists to at least some limited degree. However, **civil conflict is only likely if Trump takes actions to drastically intensify uncertainty** about the transition of power. As [Bloomberg News reported](https://www.bloomberg.com/news/articles/2020-11-04/cities-prepare-for-civil-unrest-that-election-night-spared-them) the day after the election:

> 
> Predictions of widespread violence fizzled on Election Night, but police and businesses across the U.S. are keeping preparations in place as President Donald Trump falsely claims victory -- a scenario that experts warned held a greater potential for unrest.
> 
> 
> 

That hasn't really happened (even though Trump has not formally conceded his electoral loss and continues to make baseless assertions about voter fraud) and up to now I can find no evidence of significant violence or property damage related to the election.
No, there have not been any riots.

Since that may seem surprising considering there are a lot of extremely invested people on both sides you need to consider the current overall position.

At the moment both sides are being told "it's fine, the courts will take care of it."

So Biden supporters are not happy about the situation and there have been sporadic protests (for example see the Republicans being flown in to talk to Trump who were met with protestors as they travelled).

Trump supporters are not happy and there have been sporadic protests (for example see the few thousand people Maga March).

But at the moment both sides are being told by their leaders that it's fine. They're going to win in the end. So they're waiting. And they're stewing, and getting worked up and more and more angry.

And that's when it will get dangerous. Because one of those sides (almost certainly Trump based on available evidence) is either going to lose but claim it was stolen (causing huge anger in his supporters) or win by a highly dubious means (causing huge anger in Biden supporters).

That is when we can expect violence to occur, as soon as it becomes clear that one side no longer has a non-violent route to victory.