As far as people having instinctive reactions they can't control, this can certainly be true. But I don't really understand who you're recommending nonviolent c

As far as people having instinctive reactions they can't control, this can certainly be true. But I don't really understand who you're recommending nonviolent communication to in this context? The person swearing was a random 911 caller attempting to receive help; we can't expect every caller to know nonviolent communication, or to recall it in life-or-death situations. The person upset by the swearing was a 911 dispatcher; if they have involuntary triggers around language then a job that absolutely requires remaining composed while talking to frightened strangers is dangerously poor fit. And I don't think it would actually be good for the dispatcher to practice NVC - whatever its merits, it's not a process meant for rapidly transferring vital information. Safety and emergency-response communication is an entire topic of its own, and emergency medical dispatchers already get specific training on how to achieve the goals of that work.