This might be a picture of the actual perp.
Looks perhaps more like a [nazi] helmet and some sort of nazi coat.
https://gyazo.com/3dbf54c1b828f2185ece7f041317c3f5
Not confirmed though, but with some sort of mask, I could see how kids could think this was some sort of Darth Vader outfit.
I am looking at what is supposedly the perps youtube account and looking at the videos he has liked.
Lot of computer games, Ramstein, pro atheism, anti immigration, anti islam and south park...also some documentaries about “Hitler’s superweapons...
Not sure I should post this since again, it is not confirmed this is the perp...