Defensible space appears to be a real trend these days in urban settings. According to the Center for urban research and learning:

Defensible space commonly refers to architectural and environmental design used to reduce criminality by increasing field of observation and ownership. When space is used in such a way that makes people feel safe and secure in the community, it fosters the likelihood for increased social interactions- a primary source of crime deterrence. Techniques, such as lighting, fencing, and landscaping, can define spaces in a manner that promote community safety by decreasing criminal activity. Oscar Newman (Defensible Space- Crime Prevention through Urban Design)