Emphasis is on criminally caused damage and injury and on the motivation and objectives of the perpetrator. In Sweden in recent years, attention has been focused on preventing crime against domiciles through the use of improved building materials and surveillance. Government is urged to play a role in increasing residential security through improved housing codes, environmental planning (including urban planning), and job programs. If people are able to remain in their homes for long periods of time, they will be more concerned with remodeling and improving them. Neighborhoods also will become more cohesive, thereby increasing security. A comprehensive program, as cited in a case study in the city of Norrkoping, Sweden, is required to deter residential crime.