I was at that game in 2014 and I was honestly disgusted by the Louisville fanbase. I was unfortunate enough to be surrounded mostly by Louisville fans during the game and it was nothing but consistent drinking (smuggled in bourbon), smoking cigs, and telling us to sit the f@&k down whenever ND did something well.
After the game when ND was singing the alma mater, the Louisville band and fans took it upon themselves to try and out sing the ND faithful, which they easily accomplished. I never had an opinion of their fanbase before then but that game really left a bad taste in my mouth.
I hope ND crushes them.