Good news: Elizabeth Warren has stopped hiding behind aides to cover up her choices. Bad news: She’s now hiding behind everyone else. When MSNBC’s Chris Hayes asks Warren about the report from Politico about the six “women of color” who walked off her Nevada campaign over racism and tokenism, Warren tells Hayes, “I take responsibility for this.” Just before that, though, Warren explains why it’s really the fault of America’s “long legacy” of “racism and oppression.” HAYES: There’s a story in Politico that I saw you responded to, and I just want to get your response to it here on...