The part where they would need to prove "imminent" danger (without it being defined) and the Supreme Court overturned its previous decisions in making that ruling? Sure, it's not a clear cut crime and would need to be its own case. That's also why I originally qualified it with "if it creates a disaster". I'm not suggesting immediate conviction without trial(s).
I also think the media landscape is very different from 1969 when that ruling was made, and I disagree that calling for "revenge" against non-white people on the day of a specific rally is "abstract" like the ruling said, but that's a topic for a different day.