Donald Trump fired an Instagram broadside at Hillary Clinton on Tuesday, splicing together a video of complaints from Benghazi victims' relatives about her initial explanation to them for the 2012 terror attack in Libya.

The short clip includes three family members saying Clinton told them a crude anti-Islam Internet video titled 'The Innocence of Muslims' sparked protests the spiraled out of control outside a U.S. diplomatic compound, leading to the deaths of the American ambassador to Libya and three other personnel.

The closing seconds show Clinton laughing uproariously during last October's hearing before a special congressional committee investigating the bloodshed.

'I DON'T KNOW WHY THAT'S FUNNY!' Hillary Clinton is shown in a new Donald Trump Instagram video laughing uproariously during last October's Benghazi hearing, superimposed over footage of her State Department's consular compound burning after a terror attack

BLAME YOUTUBE: 'We’ve seen rage and violence directed at American embassies over an awful Internet video,' Clinton claimed publicly three days after the Islamist terror attack

NO MERCY: Presumptive Republican presidential nominee Donald Trump has pledged open up on Clinton with both barrels, and branding her as dishonest about a deadly terror attack is one tactic in that strategy

'We’ve seen rage and violence directed at American embassies over an awful Internet video,' Clinton is shown saying during an Andrews Air Force Base ceremony to repatriate the victims' remains three days after their deaths.

Cut to Patricia Smith, mother of the late diplomatic information officer Sean Smith, one of the victims.

'She lied to me. She told me that it was the fault of the video,' Mrs. Smith says in a Fox Business Channel broadcast that aired on March 11 of this year.

Smith said that day that Clinton lied to her while 'we were nose-to-nose at the coffin ceremony.'

'I said, "Are you sure?" She says, "Yes, that’s what it was. … It was the video." And she knew full well it wasn’t at that time.'

Some of Clinton's emails, released by the State Department last year under a court order, showed that on the night of the attack she wrote to her daughter Chelsea to say that her officers 'were killed today in Benghazi by an al-Qaeda-like group.'

She also called the leaders of Libya and Egypt with similar updates, blaming radical Islamists for the deadly carnage.

GRIEVING: Patricia Smith (left) and Charles Woods (right) both told TV interviewers that Hillary Clinton blamed a YouTube video for their sons' deaths – while she told her own family and foreign leaders that armed terrorists had launched a premeditated attack

'ABSOLUTELY': Kate Quigley (right) told Fox News host Megyn Kelly (left) that Clinton had said the Benghazi attack was a 'protest' that had gone bad

But she told families of the fallen a different tale, they say – including CIA security contractor Ty Woods' father Charles.

Team Trump's video has the elder Mr. Woods telling a Fox News Channel audience: 'She said, "We are going to have the filmmaker arrested who was responsible for the death of your son".'

Kate Quigley, the sister of CIA contractor Glen Doherty, piled on in an interview with Fox's Megyn Kelly.

'So she did say to you that the Benghazi attack was caused by protests,' Kelly asks her for clarity.

'Absolutely,' she responds.

In that January 2016 interview, Quigley recalled Clinton visiting with her and other Benghazi family members.

'She clearly came in with a script and an agenda and talked about ... that we should feel sad for the Libyan people because they're uneducated, and that breeds fear, which breeds violence, which ultimately led to the protest that took my brother's life,' she told Kelly.

'And you know, knowing now what she knew then, it just blows my mind that she would choose to take that stance on that of all days.'

FOUR DEAD AMERICANS: The September 11, 2012 attack by the militant Islamist group Ansar al-Shariah killed U.S. Ambassador to Libya Chris Stephens, two CIA contractors and a diplomatic information officer

The laughter at the end of the Trump video – with Clinton's face superimposed on footage of the consular building in flames – comes from an October 22, 2015 hearing before the U.S. House Select Committee on Benghazi.

Alabama Republican Rep. Martha Roby questioned Clinton about where she was and what kind of information she was given during the night of the attack.

'Who else was at your home. Were you alone?' Roby asked?

'I was alone. Yes,' came Clinton's answer.

'The whole night?'

'Well, yes, the whole night!' Hillary responded, bursting into laughter.

'I don't know why that's funny,' Roby shot back. 'I mean, did you have any in-person briefings? I don't find it funny at all.'

'I'm sorry. A little note of levity at 7:15 [p.m.],' said Clinton, noting that the hearing had been grinding on for more than nine hours.

'Well, the reason I say it's not funny is because it went well into the night,' Roby lectured, 'when our folks on the ground were still in danger. So I don't think it's funny to ask you if you were alone the whole night.'

NO REST: Hillary has worn Benghazi like an albatross around her neck, especially the moment in a 2013 Senate hearing where she asked 'What difference, at this point does it make?' whether the deaths came from a protest or a planned attack

MAKE SPELL-CHECK GREAT AGAIN: Trump's Twitter account blasted out Tuesday's video but had to revise the spelling of the word 'judgment'

Trump has sought to paint Clinton as a politician who showed 'poor judgment' during her time as secretary of state, using comments a month ago from her sole remaining challenger, Sen. Bernie Sanders of Vermont, as a springboard.

'She may have the experience to be president of the United States. No one can argue that,' Sanders said April 10 on NBC’s 'Meet the Press.'

'But in terms of her judgment, something is clearly lacking.'

On Tuesday afternoon the Republican front-runner tweeted the link to his new Instagram video with a four-word commentary: 'Hillary has bad judgement!'