[krapp]

>Any communication channel, by virtue of human nature, is going to enable assaulters and murderers. If you look at assault and murder, most people are victimized by their own kind.

We're not talking about a purely neutral and general "communication channel" on which violent discussion or reaction occurs, when it does, merely by happenstance wholly unconnected to the nature of the community. We're talking about a channel for which racist and violent expression is an explicit part of its culture, identity and raison dêtre. Not a knitting forum in which one knitter just happened to have assaulted another knitter IRL, but a channel for racists in which one racist decided to shoot up a synagogue, in which said shooter linked his motivations and inspiration to that channel.

Also, given that we're discussing a specific instance of racially motivated violence, I don't know what relevance mentioning the existence or relative prevalence of other forms of violence actually has to the topic at hand.