I bet there are PIs who specialize in finding people on Hollywood blvd.
Used to be. Costumes are about as bad as Times Square. Sickening bad underage sex stuff( all the runaways seem to end up there) and gangs. Maybe Trump can just re route the whole street.
In the video I saw (after she was attacked), she was surrounded by some type of security, or local police (all wearing the same type of uniform). You could start at the local police nearest to the location of the incident.
If some type of security or police showed up at the incident, there will be a record of that contact.