"Architecture of Fear"
I like the phrase:
Németh said the zones not only affect the appearance of landmark buildings but also reflect an ‘architecture of fear’ as evidenced, for example, by the bunker-like appearance of embassies and other perceived targets.
Ultimately, he said, these places impart a dual message—simultaneously reassuring the public while causing a sense of unease.
And in the end, their effect could be negligible.
“Indeed, overt security measures may be no more effective than covert intelligence techniques,” he said. “But the architecture aims to comfort both property developers concerned with investment risk and residents and tourists with the notion that terror threats are being addressed and that daily life will soon ‘return to normal.'”
My own essay on architecture and security from 2006.