Trump did not unequivically and emphatically denounce the white supremacist marchers.
He came back on Tuesday making a defense of their actions, in an attempt to avoid alienating a base of voters he counts on. It showed clearly where his heart and mind is.
It is not a nuanced matter. Racism has to be denounced completely, and absolutely. Trump failed, and people see it and are disgusted.
It truly is is that simple. Fighting racism is not for debate.