Until facial recognition systems become fully autonomous [[because all humans have gone blind I guess?) there is no reason to stop using it.

It's not like the system makes an identification and the police are dispatched immediately and jail time doled out. I'm not in law enforcement, but I find it hard to believe than when the system does identify someone there is no human taking a look to confirm the systems work. And assuming such is the case, the whole point of these systems not being fully reliable is moot.