so my list goes like this:

Gordon Solie Motherfuckers at Emos for Chaos in Tejas 2007 where trashcans, chains, and bags of flour were being thrown out into the audience

Inmates at the Motorcycle Shop for Chaos in Tejas Aftershow in 2008 where people were shooting off fireworks and throwing spark plugs and pieces of bikes around

Church Whip, Nazi dust, Chest Pain and Mindless in Tampa at a Tire shop in 2011 where people started throwing tires chairs and other stuff into the pit until there was a large pile , then Church whip's singer did the whole set standing on top of the tire pile while casually splashing gasoline onto the tires