Sadly, crime is fundamentally asymmetric: a small number of bad actors can inflict damage and pain on a large number of victims.
This is particularly well-known in the domain of public urban facilities, where everything can be assumed to suffer vandalism or sabotage at any given time. You only need a handful of thugs to have a “gang” that can effectively demolish anything fairly quickly, including facilities used by hundreds or thousands of people. Defensive design, in this domain, is not just warranted but necessary.
This is particularly well-known in the domain of public urban facilities, where everything can be assumed to suffer vandalism or sabotage at any given time. You only need a handful of thugs to have a “gang” that can effectively demolish anything fairly quickly, including facilities used by hundreds or thousands of people. Defensive design, in this domain, is not just warranted but necessary.