The father of a victim of the Parkland, Fla., high school shooting on Monday slammed President TrumpDonald John TrumpDemocrats' CNN town halls exposed an extreme agenda Buttigieg says he doubts Sanders can win general election Post-Mueller, Trump has a good story to tell for 2020 MORE for highlighting the privacy fence around former President Obama's home as part of a push for border wall funding.

"You f--ng lunatic. Are you seriously trying to put our former President at risk?" Fred Guttenberg tweeted.

 

Guttenberg's daughter, Jaime, was killed at Marjory Stoneman Douglas High School in February. Guttenberg has since become an outspoken advocate for stricter gun laws and a critic of the president.

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His criticism on Sunday came in response to a tweet in which Trump cited a "wall" built around the Obama's home in Washington, D.C., to justify the construction of a wall along the U.S.-Mexico border.

Trump tweeted that the brick structure reportedly put up last year along the Obamas' home was "totally necessary for their safety and security," just as a wall along the southern border is necessary for the country.

Trump has pushed for a wall along the southern border since he first launched his presidential campaign and has pledged Mexico would pay for the structure.

Funding for the wall has been at the center of the budget impasse that spurred the current partial government shutdown. Parts of the government have been closed for 10 days and counting.

Trump has demanded $5 billion for wall funding and previously said he'd be "proud" to shut down the government over the money, while Democrats have refused to offer more than $1.3 billion for border security measures.

Lawmakers left the capital last week in a sign that a breakthrough is not imminent.