I'm no Trump fan but this seems blatantly false. He seems to have been disavowing racists since the start.
Pandering to racists since the start:
* Initial refusal to rebuke David Duke.
* "Rapists" remark.
* Violence on "both sides".
* Not mentioning the Jews on Holocaust Remembrance day.
* No traditional White House Ramadan celebration.
* Attacking the hispanic judge in the Trump U case because of their race.
* Calling for and attempting to implement a "Muslim Ban".
* Appointing Jeff Sessions, who had been denied a judgeship due to his racist beliefs.
* The dog whistling about the lawless "inner cities".
* Supporting the birther theory.
The list goes on and on.
Even when he does rebuke racists, it's never prompt, and always with a wink and a nod. If you don't believe me, go peruse stormfront and look at all the threads celebrating their "victory" when Trump says these things, they recognize what's going on.
This "wink and nod" idea seems pretty tin-foil hat to me
The ones were Trump quickly condemned people shouting Nazi slogans without qualifications? Not to mention the vehicular murder.
You can argue about to what extent his views are shared within the wider conservative movement, but when the conservative movement's democratically chosen leader supports an ideology like this, it is clearly not a "fringe".