That's because they apply the traditional standards of, "Nothing blatantly racist is racist whatsoever whenever a leftist does it." If not for double-standards the Political Left would have no standards at all.
ESSENTIALLY DEM REPRESENTATIVE JASMINE CROCKETT SAID THAT KAMALA HARRIS LOST THE POLITICAL SUPPORT OF BLACK MALES BECAUSE THEY WERE TOO STUPID OR INTELLECTUALLY LAZY TO LEARN ABOUT HER ENTIRE BACKGROUND. ACTUALLY SHE LOST US AFTER WE WERE INDEPENDENT AND CONSCIENTIOUS ENOUGH TO LEARN ABOUT HER ENTIRE AND REAL BACKGROUND.