Earlier quoted context omitted.
Never talk to the police. Let your lawyers do the talking.
To add to this: it is the police's job to positively identify those who commit crimes. If they are questioning you, it is because 1) they are investigating a crime and you are a suspect (maybe not the prime suspect but a suspect) and 2) they do not have evidence that reasonably proves that you committed whatever crime (or lack thereof) they are investigating. (Simple game theory for 2: if they had the evidence, they'…
A friend was a career LAPD detective, and he gave me the talk. He said because I’m a nice guy I might try to help the police by explaining what I saw in detail. He was adamant that I never ever do that, because in the absence of someone to pin it on, they would find a way to pin it on me. He saw it as literally their job.
No matter what, even if you are just standing there when something happens, don’t talk to the police.