Final answer:
Typically, in a police lineup, suspects are viewed by witnesses through one-way glass to prevent witness intimidation. More than four suspects are usually present to reduce suggestibility, and the lineup is conducted at a secure location, not necessarily after an indictment.
Step-by-step explanation:
The question is asking about common practices associated with police lineups. In a typical police lineup, suspects are often viewed through one-way glass or a mirror to ensure that the witness can observe without being seen. This minimizes any potential influence or intimidation. A lineup usually includes more than four suspects to avoid suggestibility and guarantees a better chance for an accurate identification. These lineups are conducted at police stations or similar secure locations, not at the crime scene, to preserve the integrity of the identification procedure. Lastly, the lineup doesn't necessarily wait for an indictment; it can be part of the investigation process to determine whether there is enough evidence to charge a suspect. Understanding the process of police lineups is crucial because it relates to the preservation of the right to a fair trial and the importance of protecting against wrongful convictions. The memory of an eyewitness is fragile, and suggestibility can influence their recollection. The Innocence Project and other legal researchers have highlighted the potential for misidentification and have proposed methodologies like blind photo lineups to help mitigate these risks.