JFK's Grandson Jack Schlossberg Tears Into RFK Jr. While Live-Tweeting Confirmation Hearing: 'F--king Liar'

John "Jack" Schlossberg, grandson of John F. Kennedy, didn't hold back as he live-tweeted outrage at his uncle RFK Jr. during his Senate confirmation hearing for Trump's Health and Human Services Secretary Wednesday.

As the hearing unfolded, Schlossberg blasted his uncle in a series of scathing posts, calling him a "f--king liar" over his remarks on vaccines and public health.

"News reports have claimed that I am anti-vaccine or anti-industry," RFK Jr. said in the video.

"You are!" the protester yelled before being ushered out of the chamber.

"I am neither; I am pro-safety. I worked for years to raise awareness about the mercury and toxic chemicals in fish, but that didn't make me anti-fish. All of my kids are vaccinated, and I believe vaccines have a critical role in health care," RFK Jr. continued.

Schlossberg, a writer and political correspondent, posted several other clips and didn't stop at vaccines. He also criticized RFK Jr.'s remarks on the 2019 measles outbreak in Samoa, where RFK Jr. had visited with an antivaccine activist after the government suspended its vaccine program. 83 people died as a result, primarily children.

"I went there to introduce a medical informatics system," Kennedy said. "You cannot find a single Samoan who will say, 'I didn't get a vaccine because of Bobby Kennedy,'" he continued.

Schlossberg fired back with a scathing tweet: "That's not what causation requires—you enjoy lying, it's easier than telling the truth."

The spree didn't stop there. When Kennedy spoke about food safety and consumer choice, arguing that he didn't want to "take food away from anybody," Schlossberg blasted his rhetoric as a cover for harmful policies.

"A FACADE FOR RIPPING FOOD ASSISTANCE AWAY FROM SCHOOL TO FUND TAX CUTS FOR BILLIONAIRES," Schlossberg tweeted.

"If you want to eat Hostess Twinkies, you should be able to do that, but you should know what the impacts are on your family and on your health," RFK Jr. said in the clip, "But I don't want to take food away from anybody. If you like ... a McDonald's cheeseburger, Diet Coke, which my boss loves, you should be able to get them."

"What about HATING JEWS AND SAYING JEWS MADE COVID," Schlossberg also posted.

Schlossberg's condemnation aligns with his mother, former U.S. Ambassador Caroline Kennedy, who on Tuesday took to Instagram to denounce RFK Jr., calling him a "predator" and painted a picture of his addiction-ridden past and financial interests in vaccine opposition.

She specifically cited his involvement in lawsuits against the HPV vaccine, stating, "In other words, Bobby is willing to profit and enrich himself by denying access to a vaccine that can prevent almost all forms of cervical cancer."