At first, I liked the message along the river walk on the edge of the Deschutes River in Bend, Oregon, alerting the public of an ecologically sensitive area. Then I became anxious by the strong foreboding instruction at the bottom of the sign. The expression "No Trespassing" felt out of keeping and more suited for a construction site with a high chain link fence and a junkyard dog nearby. It might have as easily said, "Please, stay on the walkway" and accomplished the same result and been in keeping with "feel-good" community-spirited green philosophy.
Then again maybe a maintenance supervisor thought toughness was required to prevent yahoos from "tearing it up"with dirt bikes. Whatever its genesis, this sign reminds me of the adage "that you get more from honey than from vinegar" and, whenever possible, to promote an attitude of vigilant kindness.