The ongoing co-mingling of sports and the internet has taught us a good bit. A lot of it is bad. One specific lesson — any and all fanbases should be really, really slow to take the moral high ground.
Every large group of people is going to be comprised of lots of different personality types, and some of those personality types are, inevitably, going to be gross. The Cardinals have gross fans, the Cubs have gross fans, the Flyers have gross fans, the Penguins have gross fans — one yelled "Flyers suck" during a moment of silence for owner Ed Snider last week — on and on, into infinity.