JWs knock on the doors of strangers, they call random strangers on the telephone and they write lengthy letters to addresses of strangers in their areas. Their message irritates the crap out of people. Even when they are asked to stop they do it again months down the road when some ballsy servant going out for elder decides to update the "do not call"
Why can't we knock on their doors, call or write?
Look up Tracy Metcalf's letter writing campaign and the results he found from doing so.