They never went away. Trump didn't bring back racism; he won because it was there waiting for someone to run for high office who would pander to it. That's what's really on all of us who were surprised at the election outcome. We got complacent.
The 'divided we stand' truck owner is a waste of oxygen. But he or she is right about one thing, this country is more divided now than since the civil rights movement, and possibly even since the Civil War. The coming years aren't just going to be about Trump and the GOP administration. We can stand up to them all we want, but it won't do any good if we don't stand up to the people who voted for them.
And no, I don't think all Trump voters are racists, but they all supported a campaign that brazenly embraced racism. It's up to the rest of us to remind them that they too will be judged by the company they keep.
I hope it doesn't come to civil war. I doubt it will, but it no longer seems beyond the realm of possibility. In which case we would have a severe problem. The only group that will fight fascism that is also largely armed and knows guns are libertarians. Only a small fraction of progressives have ever even fired a gun. The fascists, however, are almost all heavily armed. If it comes to civil war, the only real chance against fascism is if enough armed conservatives turn on fascists they're currently shielding.
In two years, vote like your country's very existence depends on it. It does.