If you're unaware of the letter tinged with anti-semitism and offering tacit approval that Rutherford wrote to Hitler, see this article on JWFacts.
So, we all know the Witnesses were persecuted quite a bit during the war years. I personally had family that was in Jail with brother Schroder in the 40's for the crime of "peddling."
I'm an agnostic fader, however I still think the mob violence against the witnesses was deplorable. You fight speech with speech, not violence.
Anyhow, going back to the subject of the Rutherford letter to Hitler, can you imagine how much worse the violence would have been had this letter been picked up by the press?
Why, the JW's in the U.S. might have gotten the same treatment as the Japanese-Americans being thrown into "internment" camps.