LordLancington
I recommend you read about the Charlottesville Unite the Right rally. Neo-nazis (who all openly support Trump) marched on the grounds of the University of Virginia and then throughout Charlottesville (a very liberal small city). They were violently protesting with horrific rhetoric (things like "Jews will not replace us") because Charlottesville was considering taking down a statue of Robert E. Lee, a commander of the Confederate army during the Civil War. Statues like that are, to many people, symbols of hate so Charlottesville was considering replacing it.
One of those neo-Nazis ran over a counter-protester and killed her.
In addition, it seems that you really have a very minimal understanding of the BLM movement. The reason why there were such widespread protests was because people are tired of black people being killed by police officers. While absolutely no killing is ok, an unarmed black man dying by a policeman kneeling on his throat is a little different than a policeman dying in the line of duty. Both are absolute tragedies, but one is also an abuse of power. I understand that there was rioting, but consider two things in that regard. First, as MLK Junior said, "Riots are the language of the unheard." Systemic racism is so rampant in the US and people are tired of not being listened to. Particularly when Trump tells the Proud Boys (an alt-right group) during a presidential debate to "stand by." Second, a large number of people looting and whatnot were not actually protesters, they were just taking advantage of the chaos -- which is obviously not ok.
Finally, if you need some more examples of threats of violence straight from the top, here is an article that has compiled many of Trump's threatening/violent comments: www.vox.com/21506029/trump-violence-tweets-racist-hate-speech
Also, I simply have a hard time believing that you don't associate guns with the right. That's just kind of... one of their things.
I apologize if this came off as condescending or anything like that; that is not my intention at all. It's hard because, yes, there are bad apples on both sides and neither are perfect. The reality is, however, that Trumpism has invaded the GOP and this is no longer a question of politics, but rather ethics and morality. Only one side has their leader inciting violence. The other denounces it.
And as for the OP's question as to whether there could be a civil war, I think it depends on how you define "civil war." Will there be an organized military effort with battles and whatnot? No. But if Trump succeeds in stealing this election and totally undermines American democracy, there will be violence. More than that, though, he will have possibly irreparably torn our country apart. He has created a wider divide than there has likely ever been, and that would simply be the tipping point. I am not sure that our country could recover. That sounds dramatic and I don't actually think the country would actually break up or anything like that, but it would be extraordinarily hard to undo that damage.