It would be fine if they simply approached people and tried to rule them out, but due to the psychopathy in the justice department they often try to paint the people they find into the perp often hiding evidence that exonerates them.. in other cases photo-shopping their face to cover up tattoos to make them look more like the assailant.
The issue is that prosecutors don't act in good faith... and because of that legitimate exercises maybe used against people in illegitimate ways.
The issue is that prosecutors don't act in good faith... and because of that legitimate exercises maybe used against people in illegitimate ways.