That looks like something the city might take care of, however when I notified them of the graffiti in veterans park they didn't take care of it, so I'm not sure it will work. You can try notifying them and see what happens. Here is the graffiti phone number 603-624-6444 or you can post it on their website. http://www.manchesternh.gov/website/Departments/Highway/ContactHighway/tabid/885/Default.aspx