he came to investigate a potential crime of obscenity after an anonymous caller complained about seeing a book with allegedly sexually explicit images on the shelf in the classroom. the book is gender queer, one of the must commonly challenged books in the united states. here is how that investigation went, as captured by the officer's camera. >> so this is the issue. >> okay. >> it's not the general idea of what the book is about. it's that you can't present that kind of material to people under 18. >> okay. >> so that's our concern, maam. that's why we're here. >> yeah, it's a memoir about coming of age. >> it turns out that the book was not actually in the teacher's classroom at that moment, so the officer could not seize it. the police later apologized and last night, the school district initiated into how this happened, but still, a very much happened in the state of massachusetts. on the other side of the country, some people would like to see more of this kind of thing.