All the responses here are correct in avoiding to reply to this type of question. To answer your question directly can be a violation of the Fair Housing Act. Additionally, as previously mentioned, since safety is a subjective term, the best way for you to determine if this neighborhood fits your needs you should invest some time & drive through/by at different times of the day and week. Check it out for yourself.
You can get some more information by visiting: http://chicago.everyblock.com/
There is nothing you can legally do unless their house is violating some sort of city code. If you want to speak with the owner, knock on the door, or look up their information through cook county tax assessor.
Americorp Real Estate
Brokers Associate, e-PRO