Alessandra is right. Race is one of the protected classes as stated by the Fair Housing Act. Familial Status, Race, Sex, Handicapped, Color, Religion, and National Origin are all protected classes. Notice age and marital status are not covered. Speaking to locals and learning for yourself is the only thing we can recommend. If any agent DOES comment on the subject, they are in breach of these rules and can reprimanded by their state's real estate commission. If you end up working with an agent who decides to answer that type of question, they are breaking these rules and you may want to consider working with someone else. If they are willing to ignore these basics rules that have been deeply ingrained into our minds all the way back from pre-licensing, what other 'not so obvious' rules do you think they may break as well.
Just as there as things we cannot comment about, like protected classes, there are others that we MUST disclose, called material facts. Oil tank in the ground, planned highway construction near by, or zoning restrictions are a few that some agents knowingly and willfully decide to omit when talking about a property if they think it might kill a deal. Choose carefully who you work with and consider working with someone well respected or recommended. A desperate agent may tell you whatever you want to hear thinking its good for the sale, but be careful about which lines they cross and their motives behind them.