14 key moments from the Democratic debate

There were only three candidates on the stage in the latest Democratic presidential debate, but each had plenty of big moments as they argued about taxes on the middle class, intervention abroad, and the safety of their campaign data. Here are the most memorable, important, and explosive moments from Saturday's ABC News debate:
1. Sanders apologizes for data breach
Right out of the gate, Sen. Bernie Sanders apologized for this week's data breach, in which Sanders campaign staffers improperly accessed voter data from Hillary Clinton's campaign. And Clinton accepted his apology.