You see, this sort of attitude is so typical of the progessive left. Is it totally beyond your comprehension that angry, sanctimonious people who will resort to violence in the belief that it is justified are not always far right wing? People on all sides who believe they hold the moral high ground will attempt to subvert democracy by any means if they truly believe it's for 'the common good'.
We don't have to look far to see plenty of examples of people who are not acting for the far right resorting to violence or intimidation in the name of whatever cause they think justifies it. The shooting of the right wing Slovakian prime minister a few weeks ago, by a mild mannered 71 year old writer. People hurling things at Nigel Farage, who needs a security team wherever he goes, the killing of Sir David Amess, the bullying and intimidation of Jess Phillips, Shabana Mahmood and Jonathan Ashworth by activists for Palestine. Rosie Duffield, by trans activists. The social justice warrior types on the pro-Palestine marches. The left wing agitators rioting in Paris when they thought Marine Le Pen was going to win the recent election. By contrast, did we see Le Pen's supporters rioting when they were denied their almost certain victory by a hastily cobbled together plot to keep them out? No. We did not.
But as it's clearly okay to spout conspiracy theories on this thread, personally I would not put it past the current government of the USA to take out Donald Trump and stage it as the work of a random individual.
Biden no longer knows what day of the week it is, and there is currently no obvious suitable candidate to step into the breach. Time is running out and Donald Trump is not incarcerated as they'd hoped. I think the Democrats are becoming increasingly desperate. Is there anything they would not resort to, to stop him being the next president? Again, because they believe they have the moral high ground and they tell themselves they would be saving America and saving the world. If it were not for the fact that the apparent shooter is dead but Donald Trump isn't, I'd have put money on it that this was their attempt already.