You knew the law was being broken in a variety of different ways in Ottawa. Your platform says that GiveSendGo is not a place for hatred, abuse, disrespect, profanity, meanness, harassment or spam. You knew there were reports, documented on video, of supporters of this convoy spewing hate, threatening violence, inciting people to rebel against the government and against the citizens of Ottawa.
Would your platform not have reasonably shut that down?