Journalists don't have anything to fear aboard the NSS Aurora. Why would they wear armor? Hell, let's give the Janitor armor.
1) As far as the people know IC, Aurora is a normal station, not prone to any violence. Armor is unneeded for a non-security (I know Bartender gets some, and I feel that should be changed)
2) Even if armor were necessary, I'm sure Journalist isn't very high on the list of people who would be important enough for armor. Many other jobs would have it before they did.