When witness descriptions made no mention of a suspect's facial tattoos, the police airbrushed them away for an identification lineup. The practice goes beyond one case.

When the police arrested a suspect in a series of bank holdups in Portland, Oregon, they took his mug shot and prepared to show it to witnesses in a photo array alongside images of five similar-looking men.

But there was a problem: The suspect had at least a half-dozen facial tattoos, but according to surveillance video and bank tellers, the robber had none.

This was nothing a little Photoshop could not fix.

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The police

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