However reading the exact complaint made me change my mind; they specifically provided them with content which they found to be inciting violence, and Parler took no action on them. If they actually wanted to remove them, at the bare minimum they could have at least removed the ones directly sent to them from their hosting provider. They also have no plan to moderate content themselves. Facebook, Twitter, TikTok, etc all have report buttons which then trigger an employee to review the reported content, and Parler needed to at least say they had plans to do the same.
this isn't a 1A issue. incitement to violence is not protected by 1A - that's been settled by the Supreme Court. that's why I have no sympathy for Parler's plight. also note that they're not protected by section 230 - these posts are a criminal offense, akin to not removing child porn.
And I don't think there is a legal obligation to censor other people's illegal speech.
And if it was, the buzzfeed article is presumably illegal too for hosting the same speech?