http://www.law.umkc.edu/faculty/projects/ftrials/conlaw/stratton.html
WATCHTOWER BIBLE AND TRACT SOCIETY OF NEW YORK, INC., et al., PETITIONERS v.
VILLAGE OF STRATTON et al.
My favorite part:
Finally, the cases demonstrate that efforts of the Jehovah?s Witnesses to resist speech regulation have not been a struggle for their rights alone. In Martin, after cataloging the many groups that rely extensively upon this method of communication, the Court summarized that ?[d]oor to door distribution of circulars is essential to the poorly financed causes of little people.....?