It was true for her, because {the GOP Reality Distortion Field / Clinton Derangement Syndrome / Cowardly "objective" "he-said, she-said" MSM / Putin's Troll Factories} had all together poisoned the ordinary whilte (esp. male) working class, who would otherwise to a much larger degree have voted Democrat, against her. But that won't necessarily succeed with the next Democratic candidate, so "Hillary lost because the Black vote was suppressed" does not at all necessarily mean "a Democratic candidate cannot win without Black votes". Pretty obvious logicsl fallacy there.