Has there been a murder, suicide or child abuse in the home?

Under most circumstances, sellers arent required to voluntarily disclose these types of issues or "stigmas" when marketing their home.  But if knowing this type of event occured in the home would prevent you from buying, you can ask specifically about it.  Except for a few instances, the sellers must answer direct questions concerning any known "stigmas". 

If this is an issue concerning you, then have a conversation with your REALTOR and/or attorney.