I don't have any 1st hand experience but do have 2 stories told to me that make me wonder about JA.
1) I noticed a scar on a guy's shoulder (a guy I've known for a bit). Asked him what happen and he said he was attacked by guy with a knife when digging his grandfather's (or grandmother's) grave.
2) Last year someone on here noted that someone had been shot dead in Retreat. I was arriving shortly after that and asked around b/c I know some people from that area. Most everyone said nothing (that was a whole see&blind, Hear&Deaf thread, IIRC), but one guy told me the victim was digging a grave with someone else when gunmen set upon them and shot him.
So those 2, plus OT's story make me wonder... what is about JA with attacking people when digging graves??