Washington D. C. - Kimberly Guilfoyle certainly made the loudest impression on the first day of the Republican National Convention. The former district attorney and currently Donald Trump Jr.'s partner earned quite a bit of ridicule on social media for her ear-splitting address.

The 51-year-old roared at the camera with such gusto that some Twitter users asked whether she even knew what her microphone was for.

Even Chuck Ross, a reporter for the arch-conservative website Daily Caller, quipped: "I heard Kim Guilfoyle's speech and my TV is not even on".

But it wasn't just the theatrical performance - arms raised and eyes bulging - that made Guilfoyle's speech stand out. It was also the message, intended to stoke fear of a Democratic election victory.

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"They want to destroy this country and everything we have fought for and hold dear," she raged. "They want to control what you see, think, and believe in - so they can control how you live."

Guilfoyle used California as a cautionary tale: "It's a place of immense wealth, immeasurable innovation and an immaculate environment - and the Democrats turned it into a land of discarded heroin syringes in parks, riots in the streets, and blackouts in homes."

This was a highly personal jab: Guilfoyle was once married to the current governor of California Gavin Newsom.