That sentiment has selection bias built in. Anyone who commits any crime wasn't deterred by everything. It is, however, factual that people choose to behave d

That sentiment has selection bias built in. Anyone who commits any crime wasn't deterred by everything. It is, however, factual that people choose to behave differently when they know they are being recorded. That might mean choosing not to commit a crime, commit it elsewhere, destroying a camera, or wearing a mask. While a functional camera can't prevent crime, it can identify those who commit them.