Only to you.
Another reason the police might have not labored mightily to shoo each and every neighbor into a house--they are trained to observe. They would want to see who was milling around, and if they had enough manpower on the scene, who knows who they might find acting all innocent in the crowd, 3 hours after the alleged incident? Some killers might dispose of their victim in a short time (like that guy Sickler was trying to do with Charlotte Hansen) and then make their escape while "hiding in plain sight," just for the thrill of it.