The only difference I see between Trump and Obama is that when Obama does something underhanded its not publicly spotlighted. Where as Trump lacks the political tact to keep "mean" things hidden from public scrutiny.
Trump's fault is he is too outspoken on things that are usually said off camera by liberal Democrats. It takes digging and reporter insiders to bring Obama's discrimination to light. But it's so heavily swept under the rug you can't tell if they are unfounded stories as attempts to make him look bad or that there is truth to them.
With Trump there is no digging required because he likes his foot in his own mouth. Making it easy for the progressive liberal to react with hurt feelings and develop a strong bias as if Democrats are faultless and pure.