A man was removed Friday by police officers from a Hillary Clinton campaign rally in South Carolina, after raising questions with husband and former President Bill Clinton about his wife’s role in the Benghazi terror attacks.

“Four (Americans) were killed, and your wife is trying to cover it up,” said the protester, who said he’s a Marine sergeant and eight-year, active-duty veteran.

Hillary Clinton was secretary of state during the Sept. 11, 2012, terror attacks on a U.S. outpost in Benghazi, Libya, in which U.S. Ambassador Chris Stevens and three other Americans were killed.

Families of the victims say Clinton told them in the immediate aftermath of the attacks that they were inspired by an online, anti-Islamic video. Clinton’s emails show she knew within hours of the attacks that they were terror related.

“I heard you,” Bill Clinton said at the rally in Bluffton, S.C., in an effort to respond to the protestor, over cheer and boos and before sheriff deputies removed him. “You listen to me now.”

Clinton is the Democratic frontrunner in the race, leading primary challenger Vermont Sen. Bernie Sanders by double digits in national polls and in South Carolina, which on Saturday is holding its Democratic primary.

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However, polls show voters still have deep concerns about Clinton's trustworthiness over such issues as Benghazi and her uses as secretary of state of a private email server for official correspondence.

Emails from Stevens in the months before that attacks show that the State Department, which Clinton ran from 2011 to 2013, didn’t response to his request for better security at the outpost.

Clinton needs “to take responsibility for dropping the ball,” the Marine told the Island Packet/Beaufort Gazette outside the venue, after being removed. “The fact that she is not in prison now is mind-blowing.”