The police start their operation to take out Hirokawa and the remaining parasytes. Plans go awry when the Parasytes try to fight back. Things get more gruesome when Gotou appears.
A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.