I guess most people have prejudices against individual behaviour that they find objectionable. For example people with loose morals, liars, cheaters, burglars, etc. But JW teach no prejudice against race at all which is great. But prejudice against groups of people, that are not Jw.
Isn't that prejudice especially if one is df'd or da'd? They will not speak to you or associate with you even if you are family as prejudice means to pre judge make an opinion or form a belief without knowing the facts or refusing to accept the facts.