damn Gallows wasn't nearly as crazy at my date. The frontman even got pissed at some douche who was trying to start fights, and he kept complimenting himself for not fucking up a song since it was only has 5th show apparently. He never went into the crowd and started moshing. Still it was a good performance, I definitely see where you're coming from by labeling them dirty.
+ Four Year Strong actually didn't consist of the "lets get closer to the band" kids. Surprisingly the whole place was nonstop moshing and crowdsurfing. There are chairs at the side of the venue and needless to say many of them made it into the crowd and people were jumping off them.