I'd like to amend Mark's statement, if I may.
It isn't so much that it's a Fair Housing Act violation to talk about crime as much as the fact that real estate brokers and their agents are licensed to perform real estate brokerage services, and are not experts when it comes to interpreting crime statistics.
There is an added layer of liability when a Licensee presents themselves as an authority and decrees a neighborhood "safe" or "unsafe," which could result in our having our licenses revoked.
Look at it from our point of view. Let's say that one of our agents calls Switchblade Heights a "dangerous neighborhood." The sellers of properties that we have listed there may have legal recourse against us for taking action detrimental to our agency relationship. Let's say that another of our agents calls OpenDoor Lane safe, and someone buys a property there and a Charlie Manson - type goes amok.
Our opinion on whether a neighborhood is safe or dangerous is not a professional one, should not be solicited, and sure as heck shouldn't be relied upon.
All the best,