Pat Smith, whose son was killed in the attack on a USA compound there, told the Quicken Loans Arena audience that she blames Clinton "personally" for her son's death. Pat Smith tells Republican delegates at their convention: "If Hillary Clinton can't give us the truth, why should we give her the presidency?".
"Hillary Clinton's platitudes on gun control and public safety will not ensure an America in which both civilians and law enforcement can feel safe in their own neighborhoods", said Telly Lovelace, Republican National Committee national director of African-American Initiatives.
In a preview clip of an interview with CBS anchor Charlie Rose that's set to air Tuesday, the former secretary of state slammed Trump over what she characterized as "simplistic, easy answers" to major problems.
Her audience responded with tense silence as she publicly mourned her son's death, but that void was followed by cheers as Smith blamed Clinton and then accused her of lying at Sean's coffin ceremony. She also said Clinton lied to her about the reason for her son's death in the days following the attack.
Sixty-one percent said they have a somewhat unfavorable or unfavorable view of Trump, with 52 percent saying the same about Clinton.
Meanwhile, in a fresh attack on Mr Trump, Clinton campaign said the Republicans themselves are not happy with the controversial tycoon and are avoiding his candidacy which proves he is "temperamentally unfit" to serve as President. "Donald Trump is everything Hillary Clinton is not". "If Hillary Clinton can not give us the truth, why should we give her the presidency?" she asked, receiving a standing ovation. "I think it was wrong, I don't care what that woman up there - the mother - has felt".
Clinton also hit Trump on another sensitive issue with black voters: his questioning of President Obama's citizenship five years ago. "He will make America stronger, not weaker".
When a man waved a sign near the front of the stage that read "Hillary For Prison", Smith apparently took notice.
Delegates will hear from Benghazi attack survivors Mark Geist and John Tiegen, along with a trio of GOP members of Congress with military experience: Sens.
As the evening comes to a close from the first day of the Republican National Convention, there are already plenty of moments to discuss.
In an ABC News poll released this week, 60% of voters said Trump was not qualified to be president, 37% said he was qualified.