B. Sarim,
I just finished reading Charles Mackay's Extraordinary Popular Delusions and the Madness of Crowds. It was first published in 1841, and I believe it is still in print. [I borrowed this one from my uncle's research collection.] The situation isn't unique to Witnesses, of course. It seems to be a general human failing. While Mackay's book is illuminating, it doesn't seem to offer any solutions. Still, you may want to read it.