All teams (including mine) have their share of f**kwit supporters, but I think the majority from all teams are pretty good.
Souths fans in my experience are the most feral based on numbers, but for the most part pretty harmless.
Worst experience though was a few Raiders fans in 82 or 83. I would have been 11 or 12 & it was the first game I'd been to where Penrith actually gave the other team a good touch up. I went to the toilet under the old Panther scoreboard at full time & got flogged by 4 Raiders fans (15 or 16 year olds) because I wouldnt give them my flag. I probably gave them a bit of cheek, dont remember too much, but copped a broken nose, jaw and a shit load of bruises.
Knights fans are probably my favourite. I remember a game, maybe 98, A fleet of SId Foggs buses ferried half the population of Newcastle to Penrith. I was in the section right near where the Knights fans had invaded. It was Robbie O's first game back from the drug ban. There was a fair bit of banter pre game between both groups of fans & it looked like it might turn ugly. Once the game started things settled down. It ended up a 12 all draw and both sets of fans stood and applauded the teams off the ground. Then it was all high fives and singing Kumbayah as we left the ground.
This one I wasnt actually at the game, but leaving the easter show. Souffs were playing the Dogs at historic Homebush. It was a miserable day and had pissed down rain for most of it. I'm in a wheelchair and slipped on the wet floor trying to transfer from the wheelchair into the car. I smacked my head on the sill panel of the car and made a bit of a mess of y face. A couple of Sam Kasiano lookalikes all decked out in the doggies gear came over and picked me up, helped clean me up, calmed the Mrs & kids and got ,me safely in the car. Good blokes. I was cheering for the dogs when I got home & watched the game on TV. They won.