Could You Accidentally Purchase a Stigmatized Home?

I recently stumbled upon this article which I felt was interesting enough to share. 

According to the CBC in most of Canada there is no legal obligation to inform the prospective buyer of a new house that the house was the scene of a murder or suicide. In contrast, several US states have rules that force disclosure of such if the crime happened in the recent past. 

This raises an interesting question, do you as a prospective buyer feel you should have a right to know the history of your house?