No because the your being part of organization is a lie that you still believe. You probally were taught to believe such things when you were little. The organization has mostly likely has never interacted with you ever. You have bought their products, but there is nothing litigous about reading material in most of the free world. They are a holding company and they print media, give loans, trade real estate, and construct buildings. If you were not part of those things then you have no case for a class action.
The organization is much more inert in real life than they say they are. They are 6 corporations that you most likely can never be hurt by unless you are a municipality that needs taxable land to stay afloat. If you have a problem you can sue your local kingdomhall corp, but do you really want to take a hand full of truk drivers, school teachers, and postmen to court?
THe only thing the watchtower is guilty of is rackeetering but because they are non profit and psuedo religious and not into guns and drugs the FBI won't care.