EMS first responders will remove shoes and clothing before moving casualties to hospital.
That is most likely the pile of what they left.
Wrong tree anon.
https://extra.ie/2019/03/15/news/world-news/leaders-react-new-zealand-shooting#foobox-1/3/new-zealand-shooting-19.jpg
Someone is really attached to the idea of someone randomly piling shoes at shooting scenes. When offered a perfectly reasonable explanation, they throw a fukkin wobbly.
What up anon? Your manhood tied up in your theory or something?