RE #CodeBlue & calling 311 for homeless people out in the cold: you absolutely should not do that without the express consent of the person.
The teams that respond work with NYPD. You are calling police, just ask first. Hypothermia can injure or kill people, so can police.
Absolutely. Folks should know what their options are, and know that they can go directly to a shelter without police interaction. It's good and important to communicate and ask permission before calling authorities.