In the aftermath of every American mass shooting - seemingly a weekly occurrence - one particular name is always brought up.
Internet comedian Sam Hyde is the victim of a long-running hoax that has blamed him for every shooting in the last two years, and Monday's (Sunday US time) massacre at a Texas church was no exception.
In an interview with CNN some hours after the shooting that killed at least 25, Texas congressman Vicente Gonzalez named Mr Hyde as the culprit.
"Apparently his name was released as Sam Hyde, that was the name I was given," said Mr Gonzalez.
The gunman who opened fire in a small Baptist church in Sutherland Springs, Texas, has been named as 26-year-old Devin Patrick Kelley.
Several people tweeted their frustration with Mr Gonzalez for spreading misinformation.
Mr Hyde is the target of a smear campaign that is believed to have been started by users of the anonymous message board site 4chan.
He has been misattributed as a gunman with such frequency that the phrase 'Sam Hyde is the shooter' is now a meme.
He was named as the UCLA shooter, the San Bernadino shooter and the Planned Parenthood shooter.
Mr Hyde's notoriety is not limited to the United States, with news outlets reporting him as a suspect in the Munich shopping mall shooting, the London mosque attack and the Paris terror attacks.
Photos of Hyde are circulated after every shooting by trolls, as well as well-meaning social media users.
In the aftermath of the shooting at UCLA in 2016, white supremacist website The Daily Stormer encouraged users to inundate comment sections with the name 'Sam Hyde', and to "act like everyone is supposed to know who he is".
Mr Hyde told BuzzFeed News that he believes the smear campaign against him is rooted in anti-Semitism.
"They were targeting a bunch of people but I suppose my name is the one that stuck," he said.
"It is definitely anti-Semitic because when this all started going down I was receiving a ton of emails with things written like 'you're dead K*ke' and 'commie Jew F***'".
Some have speculated that Mr Hyde, a controversial comedian known for his YouTube pranks, may have started the hoax himself.