Anonymous has vowed to reveal the identities of 1,000 members of the Ku Klux Klan on November 5, just two days from now, according to the New York Daily News.
The clash between the two groups began in 2014 during the protests in Ferguson, Miss., following the death of Michael Brown, according to Vox. During the protests, the KKK threatened to hurt protesters, leading Anonymous to hack their social media accounts, BBC reports.
From that moment, #OpKKK was born and Anonymous had launched its cyber-war against the Klan.
After compromising what they claimed was a KKK Twitter account, the hackers say they were able to get the names of 1,000 KKK members, according to Al Jazeera.
A list of 80 names was released on Monday. It included both American mayors and senators. Mayor Jim Gray of Lexington, Ky., was among the names and has since spoken out about the "data leak."
"I have never had any relationship of any kind with the KKK. I am opposed to everything it stands for," Gray said in a statement.
"I have no idea where this information came from, but wherever it came from, it is wrong."
The hackers have since denied any responsibility for the list but claimed that they will still "unhood" a thousand members of the KKK on November 5, according to the CBC, the same day of the group's "million mask march."
CORRECTION - Nov. 4, 2015: An earlier version of this story incorrectly identified Anonymous as being responsible for hacking the online dating website, Ashley Madison. The actual group responsible was "The Impact Team."
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