But as the theory that he was in fact a "crisis actor" trying to promote anti-gun legislation spread in pockets of social media and message boards, TMZ released a video debunking the entire theory. They claim there where were multiple shooters.
"I'm angry and exhausted", she continued.
David Hogg, a senior at Marjory Stoneman Douglas High School who survived the horrific shooting last week that left 17 of his classmates dead, spoke with Fox News Wednesday and clarified that he respects "99.9 percent" of NRA members but he and his classmates were pushing for change to prevent tragedies like the one that happened at his school.
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But because it was taken six months before the shooting at Florida's Marjory Stoneman Douglas High School and was filmed in a different state, conspiracy theorists deduced that it was proof Hogg is an actor who has been hired to speak around the country.
The top trending video on YouTube early Wednesday suggested in all capital letters that Hogg, who has emerged as a leading voice for gun control since the shooting, was actually an "actor".
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The incident has also highlighted how nobody - even a group of teens just days removed from seeing their fellow students gunned down - is off limits in the no-holds-barred world of online commentary, with its often-toxic mix of rumor, innuendo and unrefuted accusation.
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I wish that we could have seen MI basketball win a championship that fateful night in 2013. "Instead, it was ignored". The UofL student body president tweeted "You can take the banner but not the memories or feelings of the fans".
A keen student journalist, Hogg, who was 16 at the time, said he started filming when his friend and the lifeguard got into an altercation.
Some have suggested that Hogg's father, a former Federal Bureau of Investigation agent, coached his son to criticize President Donald Trump - an allegation that Donald Trump Jr. appeared to endorse on Twitter.
A YouTube spokesperson said the video wasn't spotted by its system because it contained a clip from an "authoritative news source".
Others latched on to Hogg's comment that his dad previously worked for the Federal Bureau of Investigation as a means to discredit him. Hogg's status as a Stoneman Douglas student has been confirmed.
The video in question used clips from local news reports, which is one of the reasons it slipped through the cracks on the platform. CBS later interviewed Hogg about the dispute and the video.
On Wednesday, a trending video on YouTube, titled "DAVID HOGG THE ACTOR." fed the conspiracy theory before the video was removed from the social media platform for "violating YouTube's policy on harassment and bullying".
"I love going to LA for the summer", he tweeted August 5, 2017. "But grief organized for the cameras - politically orchestrated grief - strikes me as phony & inauthentic".
Pozner said he's now advocating for laws that would treat victims of mass-casualty events as a protected class "so that this kind of targeting would be considered hate speech and a crime". What were you doing in LA David?' said one.