I have a colleague who tapes dozens and dozens of news articles outside his office on the hall walls. If you are a professor, I’m sure you have a similar colleague around.
So, are these people consciously engaging in signaling to their colleagues and students about their political preferences? Their erudition? That they keep up on current events? That they belong to the group? Are these professors more or less likely to be active researchers or great teachers?
Or are they just honestly attempting to provide a public service to those who might linger in the hallway and see articles of note that will improve their understanding of the world? In other words, is such activity just an annex to their typical educative function?
Or is it a strictly political act?
Or are they subconsciously signaling while believing they are providing a public service or engaging in a political act?
Before anyone brings it up in the comments, the same questions could be asked about bloggers.