All the nation’s troubles boil down to a single factor. When America’s bad eggs where mostly split between the two major parties their influence were minimal. But as the GOP (the Wall Street Party) needed votes because of demographics, it began dog whistling the negative element, and now the negative element has got the GOP establishment by the crotch with Trump as their guy.
Moreover the bad eggs have Fox and the rest of the ult-right propaganda machine and a compliant Wall Street to back it up. The know-nothings have power and as far as the eye can see the country will remain deeply divided because of it.