Cvjetanovic told CBS affiliate KTVN that he understood the photo - which depicted him holding a torch and screaming while marching alongside fellow white nationalists - had "a very negative connotation".
Cvjetanovic said that he never expected the frightening photo of him to go viral.
Social media efforts to name all the participants in Charlottesville have led to some cases of mistaken identity.
"They're not wearing hoods anymore - they're out in the open", Smith says.
Identified as Logan Smith, he is an employee at Progress North Carolina Action and a HuffPost contributor. The account's Twitter following swelled from 65,000 followers before the weekend to more than 300,000 followers by Monday afternoon.
"The fact that they themselves did not link what they were doing what they were doing with their employer should count for a lot", he said. Since 2012, the account has been calling out "casual racism on Twitter", according to the user's fundraising page.
A statue of Confederate Gen. Robert E. Lee in McGuffey Park in Charlottesville, Virginia, sparked a violent confrontation between demonstrators this weekend.
And in a disturbing turn of events, it seems that some people who align themselves with white nationalists and "alt-right" movements are encouraging others to purposely feed false doxx information to accounts like @YesYoureRacist as a way to harass innocent people. "It is not flawless". There are flaws to it, of course.
"I'm a white man, and I think that, while you may not expect that to be the person behind an anti-racism Twitter account, I think everyone - especially white people - have a responsibility to stand up against bigotry wherever they encounter it".
"Racism is evil, and those who cause violence in its name are criminals and thugs, including the KKK, neo-Nazis, white supremacists", Trump said in brief remarks at the White House on Monday after meeting with his Federal Bureau of Investigation director and attorney general.
He said many of those users follow the white supremacist forum Stormfront.
Nevertheless, Smith insists that he never meant to get people fired from their jobs or harassed online, but that none of these individuals were "hiding behind hoods", he told The News & Observer. One women died and 19 were injured when a auto driven by a man identified as a white supremacist plowed into crowds.
"It was a huge tragedy", he told KRNV upon returning to Reno from Virginia.
Charlottesville mayor Michael Signer said he was disgusted that white nationalists had come to his town and blamed the United States leader for the upsurge of violence. Some have shared an online petition to have him expelled. "No room for it in this country".
In the online rush to name white nationalists in Charlottesville, some mistakes were made.
Cvjetanovic was at the "Unite the Right" rally that started Friday.
University of Arkansas biomedical engineering professor Kyle Quinn, who runs a laboratory dedicated to wound-healing research, was incorrectly named by the account and was hit with a barrage of online abuse.
Smith did misidentify one person at the rally but corrected the error.
Twitter's privacy rules state that context plays a big part in whether certain information is considered private or not. They share them through social media.
"Doxing an advocate of racial equality is an implicit - and often explicit - call for violence against them", he said in an email.
"These aren't just random faces in a crowd, these are real people. These are your neighbors, your co-workers, maybe even your friends".
Since Saturday, Smith said he's received a spate of death threats against both himself and his family.