When I read articles about this sort of thing, I wonder if the reporters and readers are aware that when there is a (violent) crime in public, (at least in my a

When I read articles about this sort of thing, I wonder if the reporters and readers are aware that when there is a (violent) crime in public, (at least in my area of the US) it is ordinary practice to go around to private businesses with nearby security cameras and request footage. I'm not minimizing the issue of consent, I just wonder if outraged people (especially HN types) are aware of how things are normally, and either way, are/would be outraged about voluntary cooperation. Is it generally considered ok to put up cameras and voluntarily help the police out of a desire to protect the community?