(Newser) – After spending the first part of their debate in Michigan criticizing local and state leaders for the Flint water crisis—each called for Gov. Rick Snyder to resign—Hillary Clinton and Bernie Sanders turned their venom on each other. On the topic of Wall Street, Sanders made a point to mention Clinton's speeches and again called on her to release the transcripts. As she has done previously, Clinton responded that she would release them when all the other candidates did the same. At which point, Sanders said, "I'm your Democratic opponent, I release it," and threw his invisible speeches into the air to emphasize that he hasn't given any. Even Clinton laughed, notes the New York Times.

But things were noticeably testy just prior to that. "I voted to save the auto industry, he voted against the money that ended up saving the auto industry," said Clinton, and she accused him of being a one-issue candidate. "I guess so, my one issue is trying to rebuild a disappearing middle class," Sanders said. "That's my one issue." At another point, he raised his voice when she began interrupting him during the Wall Street discussion to say, "Excuse me, I'm talking!" and she responded that if he's going to talk, he should tell the "whole story," reports the Washington Post. (Read more Democratic debate stories.)

