Facebook removed ads posted by US President Donald Trump's campaign for violating the anti-hate policy, and Twitter also considered that Trump's tweet violated posting policies on the platform.
Advertisements removed by the website attack the anti-fascist group Antiva, which the Trump administration blamed for the riots that accompanied the protests over the killing of George Floyd.
The ads include images of an inverted red triangle, identical to a drawing used by the Nazi regime in Germany to classify political prisoners in concentration camps.
"The Nazis used red triangles to locate their political victims in concentration camps ... their use to attack political opponents is very abusive," said Jonathan Greenblatt, chief executive of the Anti-Defamation League, in a Tweet on Thursday.
The "Washington Post" newspaper had previously mentioned these problematic content published on Facebook before it was withdrawn by the administration of the site.
"We do not allow (the publication of) symbols that represent abhorrent organizations or hate ideologies unless this is to condemn them," said Nathaniel Gleicher, Facebook's director of cyber security at Facebook.
"The inverted red triangle is a symbol used by Antiva, so it was included in an advertisement for Antiva," Trump campaign spokesman Tim Morto said in an email.
In a related context, Twitter posted again and for the third time a warning sign under Trump's tweet, considering that it violated the policies of publishing on the platform.
pic.twitter.com/vnRpk0zl5y
- Donald J. Trump (@realDonaldTrump) June 19, 2020
Trump's tweet included a modified version of a popular video spread last year and published by CNN, showing a hug between two black and white friends.
But the copy published by the US President shows a fake headline attributed to the channel saying, "A terrified child escapes from a racist child, the racist child may be Trump's elector," and then the real video appears with the phrase "America is not the problem, but fake news."
Twitter has created a link that leads to the real video.
Twitter had taken a similar step by placing a warning sign under two Trump tweets, one providing misleading information about mailing, and the second about looting and looting, which the website said had violated its policy of inciting violence.