JW83, I guess we define fear differently or I'm not being clear. Fear of losing acceptance in a group is a very real and strong fear. It keeps quite a few inside the organization that are experiencing a great deal of dissonance with the teachings and actions. Being different is not easy as anyone who ever was a JW knows...the question is different from whom or what other group. Humans are by nature group animals. That is why DF'ing works fairly well in the JW organization. First you are told that everyone outside the group is dangerous and will oppose you when you study. Then that is reinforced each and every time a JW sees someone or hears of someone being DF'd as well as seeing how they are treated; as well as at every meeting either directly or indirectly. JWs are told if they are outside the group they will die or be killed. So most fear being put outside the group. It's us against the world mentality. I'm sure everyone here who DA'd or were DF'd can attest to a little pain in adjusting to old friends and JW family members avoiding them...at least until they made new friends or in some cases found a new group.
Fear of being put out of one's safe little group into a demonized unknown can motivate people to do atrocious things. I have only gone through Sociology 101 and Social Psychology 101 but what I learned confirmed what life had taught me. It's that chicken pecking order...that is the chickens see one chicken with a blemish and they all peck on it until that chicken is dead or smart enough to get out of the chicken coop. It is amazing how fear can motivate groups of people to do unspeakable things.
Well, I can get into this forever...I never underestimate what seemingly ordinary and nice people can be motivated to do by fear of being kicked out of their group. This fear of people outside your group (which DF ones definitely become to good JWs) has been the motivating force behind many of the atrocities. Jews were feared and hated for years and had all sorts of wild stories told about them. This hatred was used to motivate others to destroy the Jews...not just Jews, blacks, asians, Native Americans, gays, etc.
It's amazing what people will do as a group that they would never do alone.