Trump has never encouraged white supremacists, let alone antisemites. He did very clearly denounce the neo-nazis who were involved in the Charlottesville riot, while making it clear that they were not the only ones there, just as the left-wing thugs who were actually responsible for the violence were not the only ones there. Which is of course nothing but the truth, that edited like you deny.
Most of the white supremacists seem to hate Trump and publicly denounce him as a Jew-lover. But if some claim he is on their side, this does not create any obligation on him to address that absurd claim.
Edited