Power freak security guards

Apparently, if a door is not specifically labeled "Exit" you are not allowed to use it, and the campus wanna-be police will let you know this. So, instead I walked 10 feet to the right to use a door that opens into the same area, but does have the necessary signage. All of this happening when there was no traffic either direction, but at least if there WERE a sudden stampede, I know I was safe.