This case is very important to members of this community because it shapes the environment in which they work. The Mappcase was significant because it extended the exclusionary rule and made it apply to the states, not just the federal government. By doing this, the case changed the working environment for members of the criminal justice community. It made it so that actions of theirs that were judged unconstitutional would result in the disqualification of evidence they gathered. This means that members of the criminal justice community must be much more aware of the constitutional rules that govern their jobs than they were before Mapp.