Well, you know, I'm sure kids see my "Circumcision? No way baby!" and "Today's Parents Say NO To Circumcision NOCIRC.ORG" bumpersticker all the time, driving or parked. I see cars behind me all the time, a little boy or girl in the front passanger seat. There will always be those that think demanding equal protection for male children from genital mutilation is "crazy"; that won't deter me from activism. We've had threads about leafletting books at the library and in stores that sell books and I think most posters were very positive.
I appreciate all the feedback, though. Again, I think if a child is old enough to read/comprehend an intactivism slogan and asks their parents about it, they deserve an answer. If telling a child the truth makes a parent uncomfortable, GOOD.
The most important thing, however, is to reach teens, young people, expectant parents, families that will have more children in the future, men who have been harmed, and anyone who may ever be in a position of influence regarding this issue.
A park is simply a public place. I think public places, especially those that attract those of childbearing age, is a perfect place for intactivism. The only way to test out a tactic is to try it, and if possible, observe reactions. That could easily be done with a sidewalk chalk message...IMO, it's not that much different than a bumper sticker and it's a whole lot more subtle than a billboard.
PS. Artisan: Slightly OT, but do you have boys? Have you faced this decision before? You don't have a siggy and when I searched the forum I couldn't find anywhere where you'd shared your story. Of course, only answer if you feel comfortable. I'm just curious.