I'm not going to repeat all the links in the superb posts I'm seeing. Instead, I'm asking you to go read this one by rydra_wong and this one by kore because they're brilliant. And they have good historical info on the way the Klan has moved through the last century of US history, what knocked them down and what's different now. For instance, I don't recall any other time when KKK/white supremacist members rallied without their robes, with their faces uncovered and in bright torchlight so they're identifiable in the camera photos that are posted online -- and then must account to the others in their lives (bosses, families, universities) for their actions.
And yes, Trump did not slip when he said the alt-left in Charlottesville was attacking "us". He did mean that he identifies with the white supremacists/Nazis/KKK. It wasn't a slip-up, no matter what you hear from "unnamed White House sources". Watch the Rachel Maddow videos in kore's post; she puts it together well. Ignore the toadies from the staff. But do take note of them as untrustworthy; they have already sold themselves to Trump.
ETA: rachelmanija is planning to be part of a counterprotest, to oppose Nazis at a rally in Los Angeles this Saturday, and invites those of you who wish to join her to let her know. Be safe, please, and counterprotest while keeping a good distance from people with clubs and other weapons, okay?
In the middle of this hatefulness, I implore you to find something that feeds your spirit, your soul, whatever you want to call the deepest inmost part of yourself, that makes you happy, that gives you joy, and keep doing it. The only way to do this kind of work, opposing hate, and get through it sanely is to fill yourself first with joy and love and peace to give you strength. Whatever it is, let it be your refuge. We will not see the last of this for a long time; best to start now to create your own inner sanctuary that nobody can mess with. For me it is meditation, prayer, shamanic practice, and tai chi. Handwork also helps-- knitting, spinning, weaving. Walking on the woods trails, when my foot is up to it again. Music, always. You can't give to others from your own lack; fill yourself first.