Trump, Warren engage in Twitter war
05:11Sen. Elizabeth Warren said Donald Trump's campaign is built on "racism, sexism and xenophobia." Al Sharpton, Mike Barnicle, Mark Halperin and Andrea Mitchell discuss.
Sen. Elizabeth Warren said Donald Trump's campaign is built on "racism, sexism and xenophobia." Al Sharpton, Mike Barnicle, Mark Halperin and Andrea Mitchell discuss.
