SS .. Night crawler territory for sure !!
Years ago I watched a movie called .. I think .. 'THE CROWD' .. very similar, but with a different twist ..
Just looked it up .. that's not the name
Anyway .. it was bordering on sci fi .. there would be an accident (serious) and a crowd would appear .. but no one could see them but the people who had been injured ..
NOW I'm on a mission, unless someone else can remember seeing it, and, the title ?
~M~