the arcuri-montagna showed they have enough manpower, they planned to kill desjardin at first but failed
desjardins mirarchi racaniello are in jail now i think so its group weakend since then
pietrantonio survived the attempted murder, so i think it's this faction, supported by the bonannos and not vito rizzuto to kill dimaulo

i dont think street gangs are involved, they are mafia-style murder