The top moment on Facebook from the Democratic debate Saturday night in Iowa was an exchange between Bernie Sanders and Hillary Clinton about Wall Street and campaign finance, according to data provided by the social media platform.

"I'm not asking Wall Street or the billionaires for money. I will break up these banks, support community banks and credit unions. That's the future of banking in America," Sanders said during one segment.

Clinton shot back at Sanders, arguing that he "basically used his answer to impugn my integrity."

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"You know, not only do I have hundreds of thousands of donors, most of them small, and I am very proud that for the first time the majority of my donors are women, 60 percent. I represented New York and I represented New York on 9/11 when we were attacked, where we were attacked. We were attacked in downtown Manhattan where Wall Street is. I did spend a whole lot of time and effort helping them rebuild," Clinton said.

Terrorism and the Islamic State in Iraq and Syria (ISIS) topped Facebook's list of most discussed issues at the debate. Climate change, Wall Street, Iraq and the minimum wage were also hot topics.

Sanders was the candidate that was most talked about during the debate on Facebook, with Clinton in second place and former Maryland Gov. Martin O'Malley in third.

The most engaged states on Facebook during the CBS News Democratic debate were Vermont, New Hampshire, Iowa, Oregon and West Virginia.

According to Twitter, which partnered with CBS for the debate, Sanders received 11,000 followers during the debate, Clinton received 4,800 and O'Malley picked up 4,100. Clinton dominated 45 percent of the conversation on Twitter, Sanders dominated 41 percent and O'Malley dominated 14 percent.