Im not entirely sure what happened on this occasion.
One thing is clear though, someone was hurt by a collectives actions.
This was clearly bullying and as a community you shouldn’t stand for it. I presume the person protested at the time this verbal abuse was happening?
A community leader should take this up as online bullying is no laughing matter and could be very serious should the victim suffer from depression prior to the event, no matter how much of a “laugh” the bullies found it...