This isn't true.Reality with the Bernie shyt all he care about is the white working class, he wants dems to stop talking about blacks discrimination etc. he wants democrats to reach out to whiteness that feel like blacks and other subgroups stole their plant, and construction jobs
Universal policy is the only way to get anything done in this country. When everyone can buy in, you can win. And everyone benefits.
Microtargeted policies only alienate people. Are they just and morally correct? Yes. But will they fly? No. Is the white working class racist? Probably in an academic sense. But America is racist. You live with these people. And you can get reachable ones, the not consciously racist ones on your side without entertaining their racism, to benefit everyone.
Any other strategy is destined to lose. You can't pander to anyone specifically. You just have to put forth universal policies that help all people. It's pretty simple.
Someone who did that would have supermajorities in this country.