Enforcement was weighted more heavily in the grade, the ADL said in the report.
A Facebook spokesperson said the company disagreed with the grade it received.
It encourages users to visit a website about theHolocaust.
Facebook bannedHolocaust denial contentin October.
Reddit said it removed the content cited in the ADL report.
Thecompanyalso “quarantines” communities that share offensive content including posts that deny the Holocaust happened.
That means users have to click through a warning to view this content.
Twitch, Twitter and TikTok said hateful conduct isn’t allowed on its platform either.
TikTok said it continually updates its policies and systems to combat hateful behavior.
Roblox didn’t have a statement.
Steam didn’t respond to a request for comment.
