The behaviour of the grassroots population in PNG is legendary when it comes to mob rule. You can go back as far as you like in their recorded history and find it. Tribal fights, pay back and cronyism thinly disguised as the "wantok" system. The latest set of incidences are just a reincarnation of the Police/Army riots of the early 80's and the UPNG students a little later. Rugby League made little of the tear gas in Mt. Hagen during a Test although Marty Bella had a bit to say afterwards.
The B&H Vipers, the original Port Moresby Vipers winners of the inaugural SP Inter-City Cup (now Digicel) in 1990, were weekly media front page headliners known as the "Tear Gas" Vipers. Rioting followed them everywhere including the friendly seaside town of Rabaul (crowd unrest at the field), Lae (mob panic through the streets), Kundiawa (chased on to the charter flight straight off the field), Goroka (team bus set on fire and the players spent overnight sheltering in the full-alert barracks), Mt. Hagen (on-field incursions) and even at home when they played Mt. Hagen. They lost both home and away games each by 2 points against Mt. Hagen due to extreme crowd unrest but then with increased security in the final silenced the critics 35-0.
PNG is a melting pot of social issues set to a magnificent backdrop of scenic beauty, welcoming culture and rugby league fanaticism. Unfortunately, this latest series of incidents only proves one thing and that is while law & order is only paid lip-service to then nothing has changed.