Fascinating, I didn't know that ruling. However, to the larger point, in pre-internet times if you were to enter a public forum and shout racial obscenities it

Fascinating, I didn't know that ruling. However, to the larger point, in pre-internet times if you were to enter a public forum and shout racial obscenities it wouldn't be possible to do so anonymously, I imagine you'd get cited for creating a public disturbance (possibly thrown out on appeal if you bought an expensive lawyer?), and you'd suffer multiyear reputational damage [at least in small town]. These mechanisms seem to work - I scarcely ever seen in-person behavior that sinks to the level of online behavior. And I think we're all happier for it, imagine if the public playground allowed strangers from all over the world to shout whatever phrase they want anonymously with no transportation cost.