I suspect Sanders supporters are more likely than Clinton supporters to deny that racial justice and economic justice are 2 distinct entities (which they clearly are, as evidenced by wealthy persons of color being mistreated in ways poor white folks don't experience). They're also probably more likely to either deny or underestimate white (male) privilege.
The Sanders campaign is and always has been a message campaign, and the message isn't wrong, per se. In fact, he's mostly right when it comes to matters of political corruption and the plutocratic nature of US government (it's absurd, for instance, to suggest that campaign "contributions" and payments for speeches don't have any influence on public policy). Some of his supporters, though, have gone off into grand conspiracy land. And some of his supporters have suggested that a Trump presidency would be preferable to a Clinton presidency, which not only strikes me as insane but also insulting to persons of color.
But the truth in Bernie's message aside, there will be no comprehensive "political revolution" without persons of color at the forefront. And, though it may seem counterintuitive, millennials (who comprise a large block of Sanders' supporters) are among the most ignorant when it comes to matters of race and the history of race relations in the US. 2 articles on that topic, which I encourage everyone to read:
1)
"Millennials Are More Racist Than They Think"
2)
"Is the Millennial Generation's Racial Tolerance Overstated?"
Is broad systemic change sorely needed? Absolutely. Might the Sanders campaign spur a movement toward systemic change? It's possible. But the message and the messengers require some pretty substantial modification.