The Washington Post has an editorial today entitled "Republicans Can't Pretend Not to Know What Fuels the Trump Campaign." Of course, what they refer to is bigotry, specifically white bigotry.
An honest editorial, obviously too much to hope for, would have observed that both campaigns are fueled by bigotry. In fact the Clinton campaign is more guilty of this than the Trump campaign.
The Democrats not only hope, but expect, to get north of 90% of the black vote. In fact they count on anti-white bigotry among African-Americans to be their margin of victory. They also hope to be the beneficiaries of Hispanic anti-white bigotry, although not to the same level of near-unanimity.
There is no racial or ethnic group of which the Trump campaign can expect to get anywhere near those percentages. By that standard alone, his is the less racially charged, less bigoted campaign.
Clinton isn't responsible for the cop-haters, black nationalists and communists who prefer her to Trump. Trump isn't responsible for the skinheads and white nationalists who support him.
The fringe groups pick one of the binary candidates to support; the candidates don't go looking for kooks. It's the nature of our system, which WaPo deceitfully chooses to ignore.