On the whiteboard, there are several phrases that are indicative of opinions that side with either privacy or security. Most notably, there is a quote from Benjamin Franklin that reads "those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." In this quote, Franklin seems to express a pro-privacy viewpoint, and is saying that people who give up the essential right to liberty and just blindly go along with any policy that takes away privacy in the name of security should have neither privacy nor security. There are also other snippets that express pro-privacy viewpoints, such as "don't take our freedom away" and what seems like "...fear of freedom being taken advantage of."
On the other hand, some phrases supported a pro-security argument. "As much as necessary to feel safe" suggests that the writer is willing to give up all of their privacy if it meant adequate security, which is similar to the view that Marcus's dad holds in Little Brother. Another quote that stuck out was "we have nothing to hide," which is a major argument that pro-security activists use. If we have nothing to hide, then theoretically we shouldn't fear surveillance, but who'd want surveillance watching our every move, even if the actions are completely normal?
Another thing I noticed about the whiteboard is that for the most part, people used it as a medium for expressions that had nothing to do with the topic at hand. Many people just wrote their name or their Snapchats, or the numerous generic quotes about love, hate, and life. On an unmoderated forum, it's in human nature to say whatever they want as long as they know that they will remain anonymous. It also shows that a lot of people simply don't really care about the whole privacy vs. security debate, and would rather write something completely irrelevant to the question than express their opinion on the topic.