The right to challenge the evidence is not limited to innocent people. That includes the right to challenge the evidence on constitutional grounds, and include

The right to challenge the evidence is not limited to innocent people. That includes the right to challenge the evidence on constitutional grounds, and includes the right to prevent evidence from being presented if it was improperly or unconstitutionally collected. That includes smoking gun evidence that unambiguously demonstrates that a person committed the crime they are accused of. It makes no difference whatsoever if these tactics were ever used against an innocent person. These tactics are violations of civil rights across the board. Yes, guilty people have civil rights in this country. No, our justice system is not meant to ensure that every single guilty person is punished for their crimes.