The son of former national security adviser Michael Flynn ripped Parkland student David Hogg this weekend, saying he hadn't been smacked enough growing up.

"Someone (hint: parents) clearly didn’t smack this kid much growing up. Your emotional high will run out soon so savor it while it lasts," Michael Flynn Jr. tweeted in response to a tweet from Hogg.

His tweet came in response to Hogg rejecting an apology for a critical tweet Fox News host Laura Ingraham posted about his college prospects. Hogg has become a vocal advocate for gun control since the deadly shooting at his high school in Parkland, Fla.

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Ingraham last week posted a tweet critical of Hogg and shared a Daily Wire story saying that Hogg was rejected from four colleges he had applied to.

Hogg responded, asking who Ingraham's biggest advertisers were. He then tweeted out a list of her advertisers and called for people to contact those companies.

Multiple companies that advertised during Ingraham's Fox News program have since announced they would pull their ads.

Ingraham later apologized, saying she was sorry for "any upset or hurt my tweet caused him or any of the brave victims of Parkland."

Hogg rejected her apology last week, saying he would only accept it if she denounced the way her network has "treated my friends and I in this fight."

Flynn Jr. later doubled down on his comments, tweeting: "Lot of libs triggered by this comment. If smacking your kid when he gets out of line/mouths off is 'troublesome' for you, you’re one of the main reasons our kids (in the US) are #22 in the world in education. Called LACK OF DISCIPLINE."

Flynn Jr. and his father have been investigated as part of the ongoing probe into Russian interference in the 2016 election. Flynn Jr. served as his father's aide for work on his consulting company, Flynn Intel Group. Flynn was Trump’s first national security adviser.