One thing I don't understand. As a UK citizen looking in from the outside I don't get the rage aimed at Hillary. When Brexit was being voted on in the UK it was pretty clear why we got that result and studies have backed it up. There was a huge focus on immigration and disinformation around the subject. It's like a polite way of saying racism played a huge part.
Why is this not the case for the US when Trumps campaign repeatedly panders to racists and sexist people? I don't get why everyone's happy to point the finger at her and brush off the idea of a large part of the country holding disgusting views as if she ever had a chance of winning them over.
If Brexit could be reversed us Brits would probably be spending more time talking about the ways to get that done rather than just talking about the people who voted for Brexit. All we have is the later. Although to be fair there, there has been a lot of tactical pressure on how to try and achieve a "soft Brexit". So we have spent a good bit of time talking about achieving that after the initial fews months of "Omg I can't believe how we just voted leave".
The general election game when you lose is to try and as quick as possible focus on how to win next time, because elections happen every 4 years unless it's a snap election. Brexit doesn't happen every 4 years, we had one chance there and that is the margins on a vote that important when it arguably goes wrong. You've got to play game as the system is setup. The left in America has to try and win 2020 and like it or not that won't be achieved just talking about how shit Trump is and bemoaning the die hard Republicans I mentioned earlier in this thread who will vote Republican from 18 to 88 (or whenever they die). It's why I don't think reliving 2016 is going to help and as a consequence of this book coming out so "soon", I think 2016 is going to rage on for months more in American political discourse. You don't need to forget 2016, but for the next few years it has to be on the damn back burner or you can seriously start taking that meme "Trump 2020" seriously. The Republicans aren't going to wait around for the Dems to sort their shit out to start their 2020 campaigning (yes, cue jokes about how can anyone possibly re-elect Trump now ~ Seeing as this post started talking about the UK, America, look at how we keep electing Conservatives no matter what they do).
The left in the UK is a bit of a shambles as well, as in the major opposition party can't seem to win again. You do not want the Democrats to be going through the slump Labour is and end up with 10+ years of the Republicans having a free reign. It's true the way people vote are bringing us this, but the Labour Party has for years now been full of bickering, fighting, power trips/wars, blame games and more. The divides of camp Clinton vs camp Bernie are like the breeding ground for a Democrat party in America like British Labour. Hence, please don't let 2016 and Hillary vs Bernie be still raging on in 2019. Corbyn went in heavy on the youth just there in the snap election and it brought some decent progress, so as I said earlier left leaning parties appealing to youth works. The problem for Corbyn is as above he is leading a Labour party in an identity crisis and full of arguing and bickering. Not only do you need to try and pick a good candidate, but you need to get the vast majority of the damn party trying to support the candidate and not self-sabotage from inside.
This is just my 2 cents, or 2 pence, and as I said earlier I have ignorance around American politics as it's not my country. However, you can't deny there are similarities between the left failing in America and failing in the UK. Politics is that pendulum I mentioned and it is possible to get it to swing, but you don't want to be waiting 8+ years to find whatever it takes to convince the 5~15% that is needed to win an election to vote your way again.