> And what do they mean by “Intervene”? <
Bingo! That’s the key question right there. Did those who were stabbed grab the man, and try to throw him to the floor? Or did they merely say, “Hey, pal. Knock it off, will ya?”
It goes to the state of journalism today that the article gives no clue about that.
As an aside, at this early point I’m betting this was not self-defense. In my experience with ranters, it’s the ranter who initiates any physical violence.
It jumps right out. From my perspective the story reeks like a week old homicide scene.
Not based on this article, as it stated as the suspect was talking, "Others intervened".
I've had a bit of experience too. Go into places like LA and ya see people ranting in public all the time. Some scream at their hands, some argue with telephone poles on street corners while other yap on their phones about how they want to kill Trump and his supporters.
Only a idiot or fool would attempt to "Intervene" with these people in public venue simply because they don't like what they're saying. In LA one could spend the rest of their days doing nothing but that.