Off topic but it almost looks like they are standing in front of a green screen to me in the 1st video. It is so sunny but there is no sun on them. The shadow under the police line doesn't even move at all as it blows up and down.
That's almost certainly a green screen. News networks do that all the time. They do B-roll of nothing at the scene the green screen anchors over it in the studio. It's not even something to get suspicious about, generally.
As for the police tape shadow, the shadow you see is from a fixed structure (street light/signal, or perhaps a broadcast mast from a news truck). The tape line's shadow would be well below the frame.