"Facebook has drawn an artificial distinction between generic forms of expression of hatred, which they ban, and Holocaust denial, a specific form of incitement to hatred, which they should ban, but do not.
In the US, Holocaust denial is recognized as a form of hate. Because incitement to hatred is protected under the First Amendment, Congress cannot pass laws to prevent it. Facebook, on the other hand, can and does prohibit the use of its service to promote hate. As a private company it has that right.
By refusing to accept that Holocaust denial is a form of hate, Facebook lends legitimacy to the deniers and strikes against a human rights consensus. Holocaust denial attempts to murder the victims a second time by killing their memory. Facebook must change its policy so the software platform does not facilitate this."