All police crime fighting activities wrack up real-world harm. For example I see an estimate that the police killed 1250 people in 2024. While most of the killings were unavoidable many were not.
So it's question of costs vs benefits for crime fighting methods like face recognition.
The continued knock-on affects of technology going back as far as 1939 "within this claim of general faithful duplication, "flesh" always comes to mean Caucasian skin tones." as documented in "Whole Technology of Dyeing: A Note on Ideology and the Apparatus of the
Chromatic Moving Image" https://www.jstor.org/stable/pdf/20025012.pdf