In a
LARP, the
tendency for
neutral or
good characters to
coalesce into a
mob on the last day of a
game and go
hunting for bad guys, especially those engaged in
destroy the world plots.
Clever evil characters will
insinuate someone into the mob to provide
misdirection (or
direction towards enemies.
Good guy mobs tend to also form for protection, especially after a common room massacre; innocent bystanders want to be in a fairly safe place from random violence.