Here’s a blog you should bookmark: conspicuous blankness. The blog documents messages written on public walls and other surfaces in and near West Campus. The premise of the blog is that corporations control most messages we read, so any messages from other sources, especially dissenting messages, are of course quickly erased. Thus, documenting them is valuable. Their illegality only lends them credence, in my opinion.
An old classmate at Lafayette documented the messages etched into desks in the school library every year he attended the college, saving digital files of thousands of examples, some of them stretching back to the early ’60s. Racism, homophobia, swastikas—they were all there, along with poetry, signs of boredom, and initials surrounded by hearts. Here’s his Wikipedia page (seriously): Paul Germain.