Facebook and Instagram mark the latest in companies that have exercised a ban against Faith Goldy.
On Tuesday, officials from Facebook and Google are scheduled to testify in a congressional hearing about hate crimes and the rise of white nationalism on their platforms.
The company said it has longstanding policies on extremist content and organized hate groups and is barring the individuals and organizations under its "Dangerous Individuals and Organizations" community standards policy. "That's why we have a policy on risky individuals and organizations, which states that we do not allow those who are engaged in offline "organized hate" to have a presence on our services", a Facebook spokesperson told Daily Hive.
"BANNED FROM @FACEBOOK iamp; @INSTAGRAM".
Besides streaming the 17-minute attack on the first mosque on Facebook, the attacker, Australian national Brenton Tarrant, had also posted a 70-page manifesto detailing his extreme right-wing ideology and hatred for Muslims.
Goldy responded on Twitter by directing followers to her website, writing: "Our enemies are weak & terrified".
"It's also important to note that it doesn't matter whether these groups are posting hateful messages or whether they're sharing pictures of friends and family", said the social media giant.
"Going forward, while people will still be able to demonstrate pride in their ethnic heritage, we will not tolerate praise or support for white nationalism and white separatism", Facebook said. Earlier in the year, ID Canada-a group affiliated with Generation Identity, an organization the Christchurch shooting suspect donated to-was banned from the platform.