So while the Court is correct to note (ante, at 8–9) thatthere are instances in which we have permitted searches without individualized suspicion, “[i]n none of these cases. . . did we indicate approval of a [search] whose primary purpose was to detect evidence of ordinary criminalwrongdoing.” Indianapolis v. Edmond, 531 U. S. 32, 38 (2000). That limitation is crucial.
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