The problem is that racism is a human frailty not a progressive or a neoliberal problem. Both progressives and neoliberals can be racists. I like Harris because she would appeal to both progressive economics and identity politics.
One reason why Bernie Sanders failed was that the politically-correct elitists who care more about their tax rates than average people were able to clobber him with the white male label. They will settle on Harris because she can win.