Apparently, “in 1994 Los Angeles police arrested a man for dressing as the Grim Reaper – complete with scythe – and standing outside the windows of old people’s homes, staring in.”
When googling for it, I found this: “Whenever an archaeologist uses the word ‘ritual’ to describe a find, feature or activity, this is trade code for ‘I haven’t the foggiest idea what the *hell* this was for’.”
You might as well waste some time and read more here.