Just to comment on a specific part of your question, there’s probably some selection bias to seeing more criminals in the media masked/with their hood up.
Particularly in the case of notices requesting that someone be IDed, if their face is clearly visible and in good resolution, they may not need to publicize it to have the person identified (pretty sure they can search by face in correctional/dmv databases) vs if part of their face is obscured or the only visible marker of identity is something like a tattoo or scar, they might need to publicize it more to find someone who will be able to identify the person based on that limited info.