Sanders calls for unity, but his supporters have other ideas

WILL WEISSERT Associated Press CEDAR RAPIDS, Iowa (AP) — When Bernie Sanders addresses throngs of supporters who gather at his rallies, the divisions that plague the Democratic Party can feel far away. The Vermont senator speaks of building a "mutliracial, mutli-generational movement" that will cut through economic divides, catapult him into the White House and transform the nation. Some of the highest-profile surrogates campaigning on his behalf are less sanguine. Speaking at a concert for Sanders on Friday night, Rep. Rashida Tlaib, D-Mich., led sustained booing from the stage at the mention of Hillary Clinton, his rival in the 2016 primary. Rep. Alexandria Ocasio-Cortez, a New York Democrat who has campaigned for Sanders across Iowa, says the Democratic establishment should confo