A few years ago I had my students write letters to our local paper and
give ideas of ways to help stop graffiti. To our amazement, the paper
published their letters in their entirety. Several students asked me
how I got them to do that! They were stunned that the paper might
actually care what they thought and voluntairly chose to publish their
letters. I've always wondered if that had any impact on whether or not
any of students did graffiti themselves.