Here's some discussion of the legal issues, mostly based on another recent chalk-vandalism prosecution: http://www.volokh.com/2013/07/01/chalking-and-the-first-

Here's some discussion of the legal issues, mostly based on another recent chalk-vandalism prosecution: http://www.volokh.com/2013/07/01/chalking-and-the-first-amendment/ http://www.volokh.com/2013/07/01/chalking-and-the-first-amen...