Just yesterday I was weeding through some of my late dad's things and finally threw away something - now I'm digging it out of the trash to review after seeing this thread topic.
It was a typed copy of our city's municipal codes pertaining to soliciting that he had carried in his wallet for years in a little plastic protector. It was always handy to pull out and shove in someone's face when they called the cops for his being at their door. It would be the highlight of the day for him to put it to use. Persecution, right on!
It showed the city's code for "Uninvited solicitation - Prohibited" and then had 3 big arrows he had drawn pointing downward to the next section which said, "EXCEPTION" - and it was this exception he delighted in reading to them:
" The preceding section shall not be applicable to religious solicitors whose primary purpose is the giving, selling or distribution of religious literature when done as a part of the method of spreading the distributor's religious beliefs."
Dang, this city really messed up on that one.