Did the trial court err in allowing the uncorroborated showup identifications at Cameron's trial?

QUESTIONS PRESENTED 1. The police conducted a showup lineup with Cameron and four witnesses without justification. The unduly suggestive showup lineups were never corroborated and the State did not ask the witnesses to make in-court identifications. Furthermore, the witnesses testimonies were riddled with internal contradictions and irreconcilable conflicts: (A) Did the trial court err when it allowed the uncorroborated showup identifications at Cameron’s trial? (B) Did the State negate the probability of misidentification? 2. Cameron is a victim of misidentification because he was placed in an unduly suggestive showup lineup. The 1 witness who saw the perpetrator’s face did not pick Cameron in the showup lineup. The other 3 witnesses picked Cameron because of the color of his shirt, but not 1 of them identified Cameron in open-court: {A) Was Cameron misidentified as a result of the unduly suggestive showup lineup? 3. Cameron’s counsel tried to present evidence that Cameron was detained and prosecuted after he was misidentified in the showup lineup because of the color of his shirt. The prosecution objected and argued counsel could not introduce evidence that someone other than Cameron committed the offense. The court sustained the objection: (A) Was Cameron denied his state and federal constitutional right to present a defense? ii